Pump Manufacturers Research Articles

Wilo partners with electrolyser producer Enapter to advance hydrogen

German pump manufacturer Wilo Group and electrolyser producer Enapter have signed a statement of intent to cooperate on projects to build an infrastructure for the production and transportation of hydrogen.

Sistem Pakar Untuk Mendeteksi Kerusakan Pada Diesel Pump Dengan Metode Forward Chaining Berbasis Web

Frequent fires can occur in or like buildings of buildings or high rise buildings. The losses incurred by the fire disaster are enormous. Care and maintenance standards for diesel engine pumps must be observed. All technicians must have expertise in the maintenance and maintenance of the diesel pump engine. Such expertise can be obtained from official training conducted by the education center, reading guidelines for dealing with diesel pump engine damage obtained from diesel pump manufacturing plants and additional knowledge gained from learning while attending education and training. In this study the researchers set "Symptoms of Damage to the diesel engine of the Fire Pump" as a variable. The expert system application detects web-based diesel pump damage with a forward chaining method that has been made, after conducting an expert analysis test then testing the user's response to this expert system application, the test is carried out by consulting using this expert system application. Expert systems are components and elements that are combined into one to achieve certain goals. The system design is done after analyzing the diesel pump damage data and designing a web-based expert system. Chaining forward method is a method of inference that makes sense from a problem to a solution. Damage to the diesel pump by using the forward chaining method provides the right solution of the problem at hand. Based on these suggestions it can be concluded that an expert system detects damage to a web-based diesel pump that has been made can help all users in analyzing the problem based on consultation

Germany's Abionik Group acquired by Wilo

Pump manufacturer Wilo Group is expanding in water treatment with the acquisition of the Berlin-based Abionik Group from private equity company BID Equity and other shareholders.

WILG buys borehole pump manufacturer Well Pumps

WILG (Water Is Life Group) Group has acquired the borehole pump manufacturer Well Pumps SA Belgium and Well Pumps Solar Portugal from the Van Heuverswyn brothers.

Apex Pumps sold in management buyout

UK pump manufacturer Apex Pumps founder and main shareholder Nick Sole has sold the business and assets of Apex Fluid Engineering Ltd and Precision Alloys Ltd in a management buyout deal.

EKKI offers free Covid-19 vaccinations to employees and their families

Indian pump manufacturer EKKI says that it will cover the cost of the Covid-19 vaccination for all of its employees and their families under the company's “Battle Covid” initiative.

Influence of Balance Hole Diameter on Leakage Flow of the Balance Chamber in a Centrifugal Pump

The balancing holes in centrifugal pumps with seals mounted in both suction and discharge sides are one of the approaches used by pump manufacturers to reduce the axial thrust. The balance hole diameter directly affects the axial force of the centrifugal pump. The flow characteristics in the balance chamber are closely related to the balance hole diameter. However, research is not very clear on the internal flow of the balanced chamber, due to the small axial and radial sizes and the complicated flow conditions in the chamber. In this paper, we analyzed the influence of the balance hole diameter on the liquid leakage rate, flow velocity, and vortex motion in the balance chamber. The results indicated that when the balance hole diameter was lower than the design value, the volume flow rate of leakage flow was proportional to the diameter. The liquid flow rate and vortex distribution rules in the balance chamber were mainly associated with the coeffect of radial leakage flow in the rear sealing ring interval and the axial balance hole leakage flow. The research has revealed the mechanisms of leakage flow of the balance chamber in the centrifugal pump and that this is of great significance for accurate calculation and balancing of the axial force.

Rheological and Microbiological Characteristics of Hops and Hot Trub Particles Formed during Beer Production.

During the production of beer, and especially beer wort, the main wastes are spent grain and hot trub, i.e., the so-called “hot break.” Combined with yeast after fermentation, they represent the most valuable wastes. Hot trub is also one of the most valuable by-products. Studies on the chemical composition of these sediments and their rheological properties as waste products will contribute to their effective disposal and even further use as valuable pharmaceutical and cosmetic raw materials. So far, hot trub has been studied for morphology and particle distribution depending on the raw material composition and beer wort extract. However, there are no preliminary studies on the rheological properties of hot trub and hops. In particular, no attention has yet been paid to the dependence of these properties on the hop variety or different protein sources used. The aim of this study was to examine the effect of different hopping methods on hot trub viscosity and beer wort physicochemical parameters. Additionally, the hop solutions were measured at different temperatures. A microbiological analysis of hop sediments was also performed to determine the post-process survival of selected microorganisms in these wastes. For manufacturers of pumps used in the brewing industry, the most convenient material is that of the lowest viscosity. Low viscosity hot trub can be removed at lower velocities, which reduces costs and simplifies washing and transport. The sediments also had similar equilibrium viscosity values at high shear rates.

An estimation of the European industrial heat pump market potential

This paper presents an estimation of the European (EU28) industrial heat pump market potential in terms of magnitude, sizing and number of units. This study is carried out in order to provide technology suppliers and manufacturers of industrial heat pumps perspectives for the technology. Potential heat pump applications in the food, paper, chemical and refining sectors are identified considering a maximum sink temperature of 200°C. This is achieved utilising a bottom-up methodology that uses detailed information from individual processes in the aforementioned sectors. Combining individual process data with typical plant capacities provides information on the heating capacities of heat pumps. The data is upscaled to European level, using production statistics relevant to the individual processes analysed. Since the database of processes is generic in nature and not fully covering the whole industrial sector, the results of this analysis provide a conservative estimate of the heat pump market potential. The results show a potential cumulative heating capacity of industrial heat pumps in EU28 of 23.0 GW, consisting of 4174 heat pump units which are able to cover 641 PJ/a of process heat demand. The largest number of heat pump units (%) can be found for heating capacities <10 MW, making up about 50% of the total market cumulative heating capacity. Clearly, there is a large market ahead for industrial heat pump manufacturers and suppliers. • Individual process data from food, paper, chemical and refinery sectors collated. • Heat pump integration options in processes in various sectors identified. • Methodology presented to upscale individual applications to European level. • Heat pump market potential characterised by heating capacity and number of units. • Energy and CO 2 emission reduction of the industrial heat pump market are estimated.

Private equity firm buys Unibloc Pump

May River Capital, a Chicago-based private equity firm, has acquired Unibloc Pump, a US manufacturer of positive displacement pumps, strainers, valves, bubble traps and other solutions for sanitary flow control applications.

ВЫБОР МАТЕРИАЛОВ, ПРИМЕНЯЕМЫХ ДЛЯ ИЗГОТОВЛЕНИЯ ДИАФРАГМ МЕМБРАННО-ПОРШНЕВЫХ НАСОСОВ В АГРЕССИВНЫХ СРЕДАХ

Abstract. Wear of the diaphragm-piston pump may occur due to a reduction in the cross-section of the suction circuit (caused by an unsuitable pipe diameter, a dirty fi lter, pumping of high-viscosity liquids, etc.), the use of very aggressive chemicals, high operating temperature, abrasive particles, and high pressure in the pneumatic line. The paper considers various types of materials used for the manufacture of diaphragm piston pumps: rubbers, thermoplastic elastomers, thermoplastics and thermoset materials. The physical and mechanical, technological and operational characteristics of materials and the corresponding requirements for chemical resistance, temperature range of operation and abrasiveness were taken into account using an example of soybean cultivation. It was found that the optimal material that meets the above criteria is cast polyurethane. It has high physical and mechanical characteristics, a wide range of hardness (from 30 A to 90 В by Shore), low shrinkage, which implies long-term use of the material. Polyurethane products are manufactured by free casting, in which the liquid polymer composition is cured in a form that does not require complex and expensive injection molding rigs, unlike thermoplastics and elastomers. Injection polyurethane has suffi cient chemical resistance in contact with the pump’s working fl uids and features wear resistance when pumping abrasive media. Therefore it is suitable for working in the climatic conditions of the Central region of Russia, and is also aff ordable, cheap and technologically advanced.

Theoretical Minimum Thermal Load in Buildings

Summary Building cooling and heating accounts for a large portion of total global energy use and requires commensurate amounts of resources, which contribute significantly to global warming. Traditionally, addressing this issue has meant improving the efficiency of equipment supplying the thermal energy, reducing envelope heat transfer, and reducing air infiltration. However, this approach is already reaching practical limits. In this perspective, we explore (1) how to reduce thermal load in buildings theoretically and (2) how to achieve that reduction and dramatically lower the energy required to support building loads practically. First, we discuss our framework developed for calculating the theoretical minimum thermal load (TMTL) in buildings. Our analysis shows that current thermal loads in buildings are more than an order of magnitude higher than the TMTL. We also introduce an approximate formula to calculate energy savings from zonal control of thermal load, which shows that the majority of zonal control benefits can be achieved with fewer than 10 zones. Then, we discuss pros and cons of various approaches and strategies to achieve the TMTL. We conclude our perspective with some longer-term R&D ideas, such as thermally adaptive clothing and thermal storage to help approach the TMTL, while providing the additional benefit of interacting with the renewable grid of the future.

In-Use Performance of Air-to-Water Heat Pumps: are the Standards robust?

This paper presents an energy performance comparison of air to water heat pump manufacturer quoted values, calculated seasonal performance values from standards and actual in-use values for space heating mode only. Within this, the paper determines whether an in-use factor would be suitable to correct performance predictions where differences exist. The paper also presents an in-use Carnot efficiency. Over five weeks of high-resolution data during winter and shoulder season conditions were collected and analysed for three different systems. The average in-use Carnot efficiency was found to vary largely from system to system (0.19 to 0.42). All heat pumps were found to underperform on average with respect to their standardised energy performance certificate values. The difference between standardised values and in-use values was between 11% and 53% in relative terms. The gap in performance is thought to be due to oversized or under-utilised systems. Standardised methodologies appear unable to capture potential under-performance in these types of systems. An in-use factor appeared to be an inappropriate approach in reflecting this difference. Further investigations are required to incorporate these risks into standards.

The separation of insulin pump hardware and software - a novel and low-cost approach to insulin pump design

Abstract Insulin pumps are the most consistent and accurate means of regulating blood glucose levels in Types 1 and 2 diabetes. However, the technology is underutilised due to very high costs. A typical insulin pump costs US$6500, which makes this gold standard of care inaccessible to many, reducing equity of access to care. Since insulin pumps were first introduced, the simple hardware has not changed significantly. Pump manufacturers couple the low-cost and simple hardware with their own software, removing consumer choice and locking value into the product. Using both a traditional motor-driven and novel spring-loaded approach, insulin pump hardware can be replicated for US$100. Initial testing of the traditional motor-driven prototype proves the low-cost approach has comparable accuracy to commercially available pumps, with 85.1% of basal doses delivered within 5% of target. The results obtained indicate pump hardware and software can be separated with no significant loss in accuracy. If a separate market for pump software is established, costs can be driven down through market pressure given the increasing access to relatively extensive mobile and cloud computing. If open-source software is made accessible, a complete pump could be offered for US$100. A 98.5% cost reduction would drastically improve pump accessibility, particularly in developing nations, and could lead to a global improvement in diabetes treatment, outcomes and costs.

Ebara makes Turkish acquisition

Japan's Ebara Corp is acquiring Turkish pump manufacturer Vansan Makina Sanayi ve Ticaret AŞ in a US$108 million deal.

Devising a method for ensuring the reliability of fire centrifugal pumps while reducing their weight and dimension characteristics by optimizing their structural elements

An algorithm for calculating the strength and reliability of centrifugal fire pump housings has been developed, aimed at determining the optimal mass-dimension parameters of centrifugal fire pumps. To this end, a method has been devised for determining the main indicators of reliability, an optimization mathematical model has been built, and an algorithm for solving the optimization problem using the Monte Carlo method has been developed. When devising a method for determining the main reliability indicators of centrifugal fire pumps, the strength and kinematic parameters have been taken into consideration, as well as an economic indicator of reliability and the costs of ensuring reliability. These indicators make it possible to establish the optimal consumption of materials for the manufacture of structural elements of centrifugal fire pumps that ensure their strength and reliability. When building the optimization mathematical model, a pump weight minimization was used as the objective function while the applied difference criterion makes it possible to take into consideration the economic indicator in the manufacture of centrifugal fire pumps and to reduce their cost. It was established that the principal indicator that affects the weight of a pump and the cost of its manufacture is the thickness of the pump housing wall. Based on the developed optimization mathematical model, the flowcharts of the algorithms have been constructed for solving it using the Monte Carlo method. The calculation results showed that the width of the PN-40 UV pump housing can be reduced by 1.18 from the rated one. Applying the optimization mathematical model in the process of designing fire centrifugal pumps makes it possible to reduce the pump weight by 9‒11 % while ensuring high reliability and reducing the cost of its production by 10 %

3D printing-assistant method for magneto-active pulse pump: Experiment, simulation, and deformation theory

This Letter reports a magneto-active pulse pump (MAPP) consisting of a flexible check valve and a magneto-active pipe developed by using a 3D printing-assistant method. The deformation behavior of the magneto-active pipe is investigated by using the three-dimensional reconstruction, simulation, and theoretical analysis. The larger deformation under a high magnetic field produces higher driving pressure, and thus, the MAPP can be used to transfer liquid. It is found that the MAPP responds to the strength and frequency of the magnetic field simultaneously and the pumping performance can be analyzed by a magneto-fluid-solid coupling simulation. This work provides guidance for the design and manufacture of pulse pumps in future heart pump components.

Energy Consumption Comparison of a Single Variable-Speed Pump and a System of Two Pumps: Variable-Speed and Fixed-Speed

The energy efficiency of a multi-pump system consisting of two low-power (0.75 kW) pumps operating in parallel mode and a single-pump mechanism (1.5 kW) is compared in this study. For this purpose, mathematical models, experimental data, and data retrieved from the manuals provided by the pump manufacturers are used. The single-pump system is fed by a single variable speed drive. A multi-pump system running in parallel mode consists of two pumps. One of them is driven by an induction motor connected directly to the electrical grid and equipped with a throttle. Another pump is actuated by an induction motor fed by a variable speed drive. The flowrate of the liquid in the multi-pump is controlled with the help of speed variation and throttling. In the case of the single-pump system the conventional speed control method is applied during the analysis. For both pump system topologies, the daily and annual energy consumption is obtained. As a result of conducted calculations, it was shown that the multi-pump provides 29.8% savings in comparison to the single-pump system in the case of a typical flowrate profile.

Investigating the performance of square ring under uniform squeeze rate and internal pressure

AbstractTransportation and controlling fluid flow under high pressures in pumps, valves, boilers and heat exchangers is a common exercise in the industries. The main challenge, however that has confronted designers and manufacturers of pumps and valves along with those responsible for the maintenance and upkeep of such types of machinery is managing leakages at the positions where the seals are used. One fundamental feature of seal packing is the ability of the seal to ′flow′ into the groove spaces and effectively block fluid from passing through them. The square ring has shown good ‘flow’ behavior in addition to offering low contact stresses. This research seeks to investigate the performance of the square ring. The Hertz contact theory and photoelastic experimental hybrid method are used in the study of the performance of the square ring under a squeeze rate of 20 % and varying internal pressure. It was observed that while increasing the applied internal pressure, the deformation length and angle increased due to the high stresses produced by the applied pressure. Additionally, was initiated at an internal pressure of 0.98 MPa.

Review of Methods Used for Selecting Pumps as Turbines (PATs) and Predicting Their Characteristic Curves

The use of Pumps As Turbines (PATs) can be the best solution for exploiting small hydraulic resources. Pump manufacturers do not provide the performances of their machines running in reverse mode, thus several authors developed appropriate prediction models. Some of them can only correlate the pump Best Efficiency Point (BEP) to the PAT corresponding one; other ones are able to obtain the characteristic curves. In this paper, a review of these methodologies is presented with the aim to find the best strategy that allows a designer of a small hydropower plant to select the PAT to be used and to predict its characteristic curves. The study also highlights the possibility of disassembling some models in order to merge the best parts in a more reliable strategy.