Minimize Heat Loss Research Articles

An investigation into the thermo-fluid behavior of volumetrically heated cavities irradiated from the side

Radiation induced natural convection has been extensively researched due to its rife presence in numerous natural flows. Recently, it has seen renewed and resurged interests in context of understanding the photo-thermal energy conversion and its redistribution in direct absorption solar collectors (DASCs). The present work serves to further this objective; in particular, convection induced by direct interaction of the fluid and radiation (irradiated from side) has been critically and comprehensively investigated. In addition to DASCs, the present study has significant applications in various other fields such as nuclear power plants, building design, and laser fusion. A detailed mechanistic theoretical modeling framework has been developed to quantify the impact of various fluid properties and incident flux parameters; viz., Rayleigh number (102 to 108 in the laminar regime), Prandtl number (0.01–1000), optical thickness (0.1–100), convective heat loss from the transmitting wall (controlled in the simulation by varying the modified Biot number, Bi* from 0 to 5), aspect ratio (0.1–10). Furthermore, in addition to magnitude of the incident flux, its distribution (i.e., whether uniform or linearly varying) has also been dealt with. Another distinguishing aspect of the study is the use of the “heatlines” to visualize the flow of energy as it occurs during convection caused due to volumetric heating. Detailed analysis reveals that, while a conduction dominated regime is apparent at Ra ≤ 102, a transition regime occurs at 103 ≤ Ra ≤ 104, and convection is the domineering mechanism when Ra > 104. At higher Rayleigh numbers, the pattern of heatlines begins to resemble that of the streamlines. Nature of the flux distribution at the side wall (along the depth direction) significantly impacts the temperature distribution. Furthermore, there exits an optimum value of optical thickness (for a given Rayleigh number), which ensures minimum heat loss and maximum useful energy gain. Overall, through the present work, we have been able to decipher key design and operational parameters (and quantify their impacts) which dictate the momentum and heat transport in side-irradiated volumetrically heated cavities.

A Review on Flame Stabilization Technologies for UAV Engine Micro-Meso Scale Combustors: Progress and Challenges

Unmanned aerial vehicles (UAV)s have unique requirements that demand engines with high power-to-weight ratios, fuel efficiency, and reliability. As such, combustion engines used in UAVs are specialized to meet these requirements. There are several types of combustion engines used in UAVs, including reciprocating engines, turbine engines, and Wankel engines. Recent advancements in engine design, such as the use of ceramic materials and microscale combustion, have the potential to enhance engine performance and durability. This article explores the potential use of combustion-based engines, particularly microjet engines, as an alternative to electrically powered unmanned aerial vehicle (UAV) systems. It provides a review of recent developments in UAV engines and micro combustors, as well as studies on flame stabilization techniques aimed at enhancing engine performance. Heat recirculation methods have been proposed to minimize heat loss to the combustor walls. It has been demonstrated that employing both bluff-body stabilization and heat recirculation methods in narrow channels can significantly improve combustion efficiency. The combination of flame stabilization and heat recirculation methods has been observed to significantly improve the performance of micro and mesoscale combustors. As a result, these technologies hold great promise for enhancing the performance of UAV engines.

Design and Characteristic Analysis of an Axial Flux High-Temperature Superconducting Motor for Aircraft Propulsion.

In line with global environmental regulations, the demand for eco-friendly and highly efficient aircraft propulsion systems is increasing. The combination of axial flux motors and superconductors could be a key technology used to address these needs. In this paper, an axial flux high temperature superconducting (HTS) motor for aircraft propulsion was designed and its characteristics were analyzed. A 2G HTS wire with high magnetic flux characteristic was used for the field winding of the 120 kW axial flux HTS motor, and the rotational speed and rated voltage of the motor were 2000 rpm and 220 V, respectively. The axial flux HTS motor implements a revolving armature type for solid cooling of the HTS field coil. The electromagnetic and thermal features of the motor were analyzed and designed utilizing a 3D finite element method program. The HTS coil was maintained at the target temperature by effectively designing the current lead and cooling system to minimize heat loss. These results can be effectively used in the design of propulsion systems for large commercial aircraft in the future as well as for the design of small aircraft with less than 4 seats.

Analysis of intensification of zeolite drying on a vibrating conveyor dryer with infrared emitters

The object of the research is the drying process of zeolite. The work is dedicated to analyzing an effective method for intensifying the drying process of zeolite while preserving its structural integrity. For the given task, it was necessary to choose a promising drying method with minimized heat loss and preservation of the quality indicators of zeolite. Zeolite has a wide range of applications, including soil improvement, mineral fertilizer for plant growth, dietary supplement for animal feed, air, and water purification. The crucial process for obtaining high-quality natural zeolite is the drying process. In its natural state, zeolite contains moisture, and an excess of it can deteriorate its consumer properties. Therefore, considering the best and most efficient method of zeolite drying is a promising task today. There is no available data on drying zeolite using radiation methods in the literature. Typically, this material is dried in rotary dryers. However, this drying method often results in a significant percentage of zeolite being crushed into dust. Many industries require a granular structure for zeolite. With radiation drying, this drawback is absent or the percentage of crushed zeolite into dust is minimal. The main methods of drying zeolite have been examined, revealing a fact that indicates an incorrect approach to the drying process. Factors influencing the deterioration of zeolite's quality during drying have been analyzed. These factors have several drawbacks that affect the final product, namely: crushing zeolite into powder, over-drying, which affects its quality and poses a general scientific problem. The drawbacks of drying zeolite using the main methods have been identified. The authors have developed a dryer design that minimizes the deterioration of the mentioned qualitative characteristics of zeolite, addressing an important scientific and technical challenge of creating an efficient and environmentally friendly method of zeolite drying using infrared radiation energy and the development of appropriate equipment. The proposed dryer has suggested applications in various fields.

Optimization of bamboo-based photothermal interfacial solar evaporator for enhancing water purification.

Although solar desalination is a promising approach for obtaining freshwater, its practical application encounters challenges in achieving efficient photothermal evaporation. Recent research has focused on novel configurations of solar absorbers with unique structural features that can minimize heat loss. High-efficiency interfacial solar steam generation (SSG) can be achieved by optimizing the design of the absorber to harness incident heat energy on the top interfacial surface and ensuring a continuous water supply through microchannels. Artificially nanostructured absorbers might have high solar absorptivity and thermal stability. However, the manufacturing of absorbers is expensive, and the constituting materials are typically non-biodegradable. The unique structural configuration of natural plant-based solar absorbers provides a major breakthrough in SSG. Bamboo, as a natural biomass, possesses exceptional mechanical strength and excellent water transport through vertically oriented microchannels. This study aimed to enhance the performance of SSG with a carbonized bamboo-based solar absorber (CBSA). To achieve this goal, we optimized the carbonization thickness of the absorber by varying the carbonization time. Furthermore, the height of the CBSA was varied from 5 to 45mm to determine the optimal height for effective solar evaporation. Accordingly, the highest evaporation rate of 3.09kgm-2h-1 was achieved for the CBSA height of 10mm and top-layer carbonization thickness of 5mm. The cost-effectiveness, simple fabrication, and superior desalination performance of the CBSA demonstrate a strong potential for practical applications.

Study of NO emission from CH4-air, oxygen-enriched, and oxy-CH4 combustion under HTC and MILD regimes: Impact of wall thermal condition in different oxidant temperature and dilution level

The present work investigates the effect of wall thermal conditions on the NO emission in the different inlet temperatures and oxidant dilution levels. The studies are performed for the CH4-air, oxygen-enriched, and oxy-CH4 combustion under the HTC and MILD regimes by numerical simulation of the non-premixed furnace and chemical calculations of the WSR reactor. It is found that higher heat loss from the wall and more replacement of CO2 with N2 facilitate the establishment of the MILD regime and significant reduction of NO production. The results show an optimum point for achieving the minimum heat loss and NO emission. Under the MILD regime, dominant mechanisms in the NO emission are prompt through reaction CH + N2⇌HCN + N and thermal routes for the CH4-air condition and N2O-intermediate by reactions N2O + O⇌2NO and N2O + H⇌N2+OH and thermal mechanisms for oxy-CH4 combustion. In both atmospheres, the thermal route plays the main role in the low heat loss from walls, while other routes are more active in the low maximum flame temperature. Reaction N + NO⇌N2+O by supplying O radical from reactions O + CO + M⇌CO2+M and H + O2+M⇌HO2+M is activated by increasing O2 level, while reactions N + NO⇌N2+O and N + OH⇌NO + H show the main contribution in the sensitivity analysis of NO.

Actor-critic reinforcement learning leads decision-making in energy systems optimization—steam injection optimization

Steam injection is a popular technique to enhance oil recovery in mature oil fields. However, the conventional approach of using a constant steam rate over an extended period can lead to sub-optimal performance due to the complex nature of the problem and reservoir heterogeneity. To address this issue, the Markov decision process can be employed to formulate the problem for reinforcement learning (RL) applications. The RL agent is trained to optimize the steam injection rate by interacting with a reservoir simulation model and receives rewards for each action. The agent’s policy and value functions are updated through continuous interaction with the environment until convergence is achieved, leading to a more efficient steam injection strategy for enhancing oil recovery. In this study, an actor-critic RL architecture was employed to train the agent to find the optimal strategy (i.e., policy). The environment was represented by a reservoir simulation model, and the agent’s actions were based on the observed state. The policy function gave a probability distribution of the actions that the agent could take, while the value function determined the expected yield for an agent starting from a given state. The agent interacted with the environment for several episodes until convergence was achieved. The improvement in net present value (NPV) achieved by the agent was a significant indication of the effectiveness of the RL-based approach. The NPV reflects the economic benefits of the optimized steam injection strategy. The agent was able to achieve this improvement by finding the optimal policies. One of the key advantages of the optimal policy was the decrease in total field heat losses. This is a critical factor in the efficiency of the steam injection process. Heat loss can reduce the efficiency of the process and lead to lower oil recovery rates. By minimizing heat loss, the agent was able to optimize the steam injection process and increase oil recovery rates. The optimal policy had four regions characterized by slight changes in a stable injection rate to increase the average reservoir pressure, increasing the injection rate to a maximum value, steeply decreasing the injection rate, and slightly changing the injection rate to maintain the average reservoir temperature. These regions reflect the different phases of the steam injection process and demonstrate the complexity of the problem. Overall, the results of this study demonstrate the effectiveness of RL in optimizing steam injection in mature oil fields. The use of RL can help address the complexity of the problem and improve the efficiency of the oil recovery process. This study provides a framework for future research in this area and highlights the potential of RL for addressing other complex problems in the energy industry.

On the Use of Waste Materials for Thermal Improvement of 3D-Printed Block—An Experimental Comparison

Over the years, the building envelope has evolved from a protective barrier element to a complex filter system capable of optimizing the interactions between the external and internal environments. An efficient envelope reacts flexibly to variable external conditions, minimizing heat losses in the winter season. Therefore, insulating materials play a fundamental role in building’s thermal performance. In this scenario, Additive Manufacturing represents an emerging and promising solution for the construction sector. Three-dimensional printing allows the creation of custom geometries, reduces material waste, and automates the construction process. This work aims to compare the thermal performance of a PLA (polylactic acid) 3D-printed block with an internal honeycomb structure whose air cavities are filled with natural and recyclable waste-insulating materials. The selected air cavity filling materials are (i) wood sawdust, (ii) sheep’s wool, and (iii) hemp. The thermal behavior of the block with the different filling materials was experimentally tested via Heat Flow Meter (HFM) method in a controlled environment (Hot Box). The results showed that the introduction of waste material significantly improved the thermal performance of the 3D-printed block compared to the case of air cavities. A thermal transmittance (U-value) reduction of up to 57% was obtained. Moreover, the sheep’s wool showed the best performance, with a U-value equal to 0.53 ± 0.02 W/m2K, i.e., 18.5% less than the wood sawdust and 19.7% less than hemp.

Experimental study in a compound parabolic solar concentrator with different configurations of thermal energy storage system

ABSTRACT This study explores the integration of thermal energy storage (TES) systems with solar water heating systems to increase their utilization time. While solar water heating systems are effective for low-temperature applications, they become less efficient at higher heat transfer fluid (HTF) temperatures. To solve this problem, the study suggests combining a compound parabolic concentrator (CPC) solar collector with a TES system to improve heat transfer rates and minimize heat loss. The study examines the effect of different mass flow rates and HTF inlet temperatures on the integrated system's performance, evaluating energy efficiency, exergy efficiency, and overall loss coefficient. The results reveal that the six-phase change materials (PCMs) configuration achieves the highest intercept line efficiency of 72%, with a heat transfer rate 1.7 times higher than that of the single PCM configuration. Moreover, the exergy analysis shows superior performance compared to commonly used flat collectors. Overall, the proposed CPC solar collector integrated with a TES system is suitable for low-temperature applications with an inlet HTF temperature not exceeding 65°C.

Information Processing Algorithms in the Steel-Teeming Ladles Tracking System in Steelmaking

Purpose of research. The purpose of research is to increase the efficiency of control over the movement of steel ladles in steelmaking, through the development of mathematical and software.Methods. The control of the movement of steel-pouring ladles can be divided into 2 parts: the first is the object detection in the image from a camera located on a certain section of the route, followed by determining the position of the object in the frame, and the second part is identification based on an array of data from different systems. Methods used in research are: mathematical modeling, neural networks, the basics of the theory of algorithms construction, as well as software and hardware of modern computer technologies. The article describes a model for the routes generation for the movement of steel ladles, on the basis of which the control of the movement of steel ladles is carried out. Algorithmic support is a combination of such algorithms as: an algorithm for generating possible routes for moving steel ladles, an algorithm for determining the position of a steel ladle on a route for moving steel ladles, an algorithm for identifying a steel ladle and a generalized algorithm for processing information. The structuralfunctional organization of the tracking system for steel-pouring ladles in steel-smelting production is given.Results. Experimental verification of algorithmic support was carried out on a test data set, which was formed from real technological data. Adaptation and tuning of the algorithms and software will make it possible to apply this software system in steelmaking plants with a different composition of plant units.Conclusion. Control over the movement of steel ladles allows build the process so that the movement of liquid steel will cause minimal heat loss. The need to heat steel in secondary processing units is correlates with energy costs. Thus, reducing heat loss and downtime of steel ladles will reduce energy costs for the entire process.

Ammonia-air combustion and explosion characteristics at elevated temperature and elevated pressure

Experimental and numerical study on ammonia-air combustion and explosion characteristics at elevated temperature and pressure was conducted. The results revealed that the ammonia-air flame of different equivalence ratios is quite smooth at elevated temperature and pressure. The laminar burning velocity (LBV) reaches the peak of 0.073 m/s at Ф = 1.1 and increases as increasing initial premix temperature and decreasing initial premix pressure. Maximum explosion overpressure (MEO) and maximum pressure rise rate (MPRR) reach the peak of 0.43 MPa and 0.13 MPa/ms respectively at Ф = 1.1. The theoretical MEO is significantly higher than the experimental results due to heat loss, and the minimum heat loss occurs at Ф = 1.1. MEO, MPRR and heat loss increase with increasing initial premix pressure, and MEO and heat loss decrease with increasing initial premix temperature, while MPRR increases. Okafor mechanism has the best LBV prediction performance among seven mechanisms. And the main elementary reactions affecting LBV are H + O2=O + OH and HNO + HH2+NO.

A Fan-Controlled Sodium-to-Air Heat Exchanger Configuration for Failsafe Decay Heat Removal in Sodium-Cooled Fast Reactors

Passive safety systems help to improve overall plant safety, reliability, and resilience. However, the real gain in the use of passive systems depends on the robustness of the design utilizing the passive process and the role of active elements, if any. In this paper, we propose a fan-controlled sodium-to-air heat exchanger (AHX) system design for a failsafe and passive decay heat removal (DHR) function in a pool-type sodium-cooled fast reactor. The proposed system uses a fan to control air flow and minimize heat loss during normal operation, and when the fan trips due to loss of power or a trip signal, DHR gets enabled in a failsafe mode. The system is analyzed with the help of a simplified one-dimensional model as well as with detailed computational fluid dynamics software. It is found from analysis that it is possible to control and maintain the air flow to about 4% to 5% of full flow, as in the case of conventional dampers, to minimize heat loss during normal reactor operation. The reliability of the proposed system is also analyzed and shows that the fan-controlled AHX-based decay heat removal system (DHRS) has a much better reliability compared to the conventional passive DHRS with active damper-dependent operation.

Experimental Evaluation of Thermoelectric Generator Performance under Different Heat Conduction Boundary Conditions

Heat conduction boundary conditions play a crucial role in the performance of thermoelectric generators (TEG). The TEG output voltage and power were measured under constant temperature boundary and heat flux conditions to evaluate the TEG performance under different heat conduction boundary conditions. External loading pressure and thermal interface material (TIM) were applied to reduce the interfacial thermal contact resistance. In our measurement setup, a fast-response electronic load was used for the rapid current-voltage scan, which can eliminate the thermal drift caused by the Peltier effect. A guard heater arrangement is used to minimize heat loss. In constant temperature boundary conditions, reducing the thermal contact resistance can increase the effective temperature drop across the TEG module and significantly improve the output voltage and power. But in the constant heat flux conditions, since the heat flux flow through the TEG is unchanged, the temperature drop across the TEG was unaffected by the thermal contact resistance. As a result, the TEG performance was lightly influenced by the thermal contact resistance.

Noise from ventilation systems in dwellings - Regulations and field test procedures in selected countries in Europe

In most countries in Europe, regulatory noise limits apply for service equipment in housing. During the last few decades, mechanical ventilation with heat recovery (MVHR) has become increasingly prevalent in new and retrofitted housing in Europe. The MVHR systems supply fresh air to obtain good indoor air quality, with minimal heat losses. However, the systems may operate continuously 24 hours/day and transmit noise into and between rooms by many possible paths. In practice, many people get annoyed or disturbed by the noise, especially during nighttime or when having quiet activities. Some countries have lower service equipment noise limits for continuous sources than for non-continuous sources, and lower limits also apply for the upper quality classes in acoustic classification schemes. Thus, both design and measurements become challenging. The aim of this paper is to investigate the noise limit values and descriptors applied to ventilation systems in housing in selected countries in Europe and compare limit values, field test and rating procedures as well as operating conditions and enforcement related to the limit values. Indications of typical design methods will also be included.

Reducing operating costs in district heating systems by optimizing functional parameters. Comparative studies

In district heating networks, the influence of conditions: thermohydraulic, reliability, availability and cost of materials, heat demand and energy consumption for pumping, on the operation of the system must be considered in terms of optimizing the design so that the costs of production, transport and maintenance to be reduced as much as possible. These system problems are unavoidable during operation and therefore the paper proposes an analysis based on simulating the operation of the system in two possible situations: reducing the diameters of the heat transmission pipes with the compromise of increasing the energy consumption required for pumping and respectively reducing the maximum pressure losses with the advantage of obtaining an energy saving at pumping. The comparison of the results obtained by the simulation allowed the choice of the optimal solution established on the basis of the minimum total costs (capital and operational) and the minimum heat losses on the pipeline network, taking into account the variation of investment costs of the pipeline and pumping energy depending on the diameter of the pipe.

Adaptive cold and permafrost home

Severe natural and climatic conditions, remoteness from industrial centres, and poorly developed infrastructure in the northern (Arctic) regions strongly affect the life and comfort of the population. In such conditions, the construction of a maximally habitable, available for construction, energy-efficient and climate-adaptive dwelling house is in particular demand. The main criteria for creating an adaptive house were: 1) cost-effective construction; 2) minimum heat loss during exploitation; 3) maximum use of available and local materials; and; 4) adaptability to climate change. The adaptive individual house was created taking into account many years of experience in the design, construction and operation of residential buildings in the Far North and the peculiarities of the arrangement and way of life of the northern peoples. In the process of work on the project, the main principles of choosing building materials and constructions, design and construction of an individual house in the conditions of the cold climate and permafrost were generalized and specified. It is necessary to note, that projects of adaptive houses should be developed taking into account climatic conditions of the area of construction and logistics as well as modern requirements of resource and energy saving, ecological and fire safety. Such designs should be tested in Central Yakutia, and then replicated for northern and arctic areas.

Enhancing the Efficiency of the Double-Tube Heat Exchanger by Using a Twisted Inner Tube

This study utilized two double tube-type heat exchangers. The first exchanger employed a smooth inner tube, while the second one utilized a twisted inner tube. The shell was constructed of plastic (PVC), while the tube was made of copper with a length of 1000 mm, an outer diameter of 62.24 mm, a smooth tube inner diameter of 14.2 mm, and an equivalent diameter of 11.8 mm for the twisted tube. To minimize heat loss, the shell was insulated externally with a thermal insulator. A flow rate of 3 liters per minute of hot water was passed through a ring-shaped tunnel, with an inlet temperature of 63 °C, to enhance the heat exchanger's performance. The experimental results of the two heat exchangers (smooth and twisted inner tubes) were compared, and the use of water as the primary fluid led to improved performance. The twisted inner tube-type heat exchanger achieved a maximum efficiency of 0.33 at a volumetric flow rate of 5 liters per minute, while the maximum improvement in effectiveness was 65.71% at a volume flow rate of 3 liters per minute in the twisted inner tube-type heat exchanger.

Early detection of cold stress to prevent hypothermia: A narrative review.

Temperature monitoring is essential for assessing neonates and providing appropriate neonatal thermal care. Thermoneutrality is defined as the environmental temperature range within which the oxygen and metabolic consumptions are minimum to maintain normal body temperature. When neonates are in an environment below thermoneutral temperature, they respond by vasoconstriction to minimise heat losses, followed by a rise in metabolic rate to increase heat production. This condition, physiologically termed cold stress, usually occurs before hypothermia. In addition to standard axillary or rectal temperature monitoring by a thermometer, cold stress can be detected by monitoring peripheral hand or foot temperature, even by hand-touch. However, this simple method remains undervalued and generally recommended only as a second and lesser choice in clinical practice. This review presents the concepts of thermoneutrality and cold stress and highlights the importance of early detection of cold stress before hypothermia occurs. The authors suggest systematic clinical determination of hand and foot temperatures by hand-touch for early detection of physiological cold stress, in addition to monitoring core temperature for detection of established hypothermia, particularly in low-resource settings.

Control exhaust emissions of insulated diesel engine fuelled with biogas and cottonseed biodiesel

Gaseous fuels have many advantages than liquid fuels, as their calorific values of fuels are high, pollutants emitted by gaseous fuels are low and less dangerous when compared with liquid fuels. The drawbacks associated with use of vegetable oils in diesel engines such as high viscosity and low volatility can be reduced to some extent by converting them into biodiesel. However, they (biodiesel) cause combustion problems in diesel engine, due to their moderate viscosity, and hence call for low heat rejection (LHR) engine, which can burn low calorific value fuel, give high heat release rate and faster rate of combustion. The concept of LHR engine is to minimize heat loss to the coolant, thereby increasing thermal efficiency. LHR engine in this investigation consisted of ceramic coated diesel engine. They are many methods toinduct gaseous fuels such as port injection, carburetion technique, injection of gaseous fuel at the near endof compression stroke etc,. Investigations were carried out with biogas gas as primary fuel inducted by port injection and cottonseed biodiesel was injected into the engine in conventional manner, as India is second large producer of cottonseed oil in the world. Particulate matter (PM), oxides of nitrogen (NOx), carbon mono oxide (CO) levels and un-burnt hydro carbons (UBHC) are the exhaust emissions from a diesel engine. They cause health hazards, once they are inhaled in. They also cause environmental effects like Green-house effect and Global Warming. Hence control of these emissions is an immediate effect and an urgent step. The pollutants of PM, NOx ,CO and UBHC were determined at full load operation of the engine with varied injection timing such as recommended injection timing and optimum injection timing. NOx levels were reduced with provision of exhaust gas recirculation (EGR) at optimum flow rate of 10%. The maximum induction of biogas with conventional engine (CE) was 35% of total mass of biodiesel as full load operation, while it was 45% with LHR engine. Particulate emissions were determined by AVL Smoke meter, while other emissions were measured by Netel Chromatograph multi-gas analyzer at full load operation. These pollutants were drastically reduced with induction of biogas and further reduced with advanced injection timing. NOx levels drastically reduced with EGR.

Heat Exchange and Aerodynamics of the Vertical Conical Funnel at the Thermal Power Plant Site

The funnel is the most important element of the thermal power station. An appropriate arrangement of the system for the removal of the gaseous products of fuel combustion inside the funnel results in no moisture condensation and proper maintenance of the operation conditions of the funnel. To measure the temperature of combustion products along the funnel height we need to define the boundary conditions of the third kind for the external surface of the funnel. The studies showed that in the case of the uniform velocity profile, the heat exchange and aerodynamics on the surface of the single vertically arranged funnel have specific features conditioned by the funnel configuration and the contact of its base with the ground surface. In particular, the rear part of the funnel is characterized by a periodic change in the static pressure, velocity and the height heat loss coefficient. The purpose of this research was to define the average heat loss along the height of the conical funnel situated at the industrial site of the thermal power station for different wind vectors and velocities. To simulate the heat exchange and aerodynamics near the funnel situated at the thermal power plant site we used the infrastructure that includes the following elements: mechanical compartment, substation, administrative building, warehouse and two cooling towers. The network model of the hydropower plant includes 1137782 units and 4741859 elements. A minimum orthogonal quality is 0.1 and a maximum biasing is 0.89. The ĝ RNG k- turbulence model, the Enhanced Wall Function and the Simplex algorithm were used for the velocity-pressure interrelation problem in steady flows. The air density is independent of the temperature at the computational volume inlet (the gravitation is neglected). The funnel surface temperature was specified as constant and equal to 100 C. The heat exchange near the funnel was studied at different wind directions in the wind velocity range of 5 to 25 m/s. Hence, the wind direction, the environmental infrastructure and the industrial thermal power plant site have an essential effect on the funnel height heat exchange distribution pattern. Evidently, it is defined to a great extent by the funnel aerodynamics. A maximum heat loss level is observed when the flow is rushed to the backside of the building at the south- to-north wind direction and a minimum heat loss level is observed for the east- to -west and west -to -east wind directions for the parallel flow. А minimum heat loss is observed at a longitudinal wind motion along the mechanical compartment building in west-to-east and east-to- west directions. These specific features should be taken into account when designing tall funnels with an optimal change in the combustion product temperature along the funnel height. We can draw a conclusion that the specific features of the heat exchange in question should be obligatory taken into account when designing tall funnels. Keywords: heat exchange, funnel, thermal power plant infrastructure, mechanical compartment, wind direction and 3D model.