Policy Of Neutrality Research Articles

The investigation of flocculation and deposition of heavy components in the crude oil tank based on experiment and molecular simulation

With the implementation of the “3060” carbon neutrality policy, the cancellation of external insulation has led to the increasingly serious deposition of heavy components in petroleum storage tanks. However, there are few studies on the flocculation and deposition behavior of industrial complex crude oil systems during the entire storage period in tanks. This study used an equivalent crude oil tank system to systematically investigate the flocculation and deposition behavior of industrial crude oil systems during storage. Static settling experiments were conducted for the entire storage period (32 days) to measure changes in oil parameters such as density, wax appearance temperature (WAT), gel point, and particle size at different heights in the tank. In addition, a full-component molecular system for crude oil was constructed, and molecular dynamics (MD) simulation was used to reveal the flocculation and aggregation mechanisms of heavy components in crude oil systems for the first time. The result showed that the maximum density difference between the upper and lower of the test tank is 14 kg/m3 and the marked stable time of sedimentation is 163 h. The maximum increment of the WAT appears at the bottom of the tank with the value increasing from 38.17 °C to 45.75 °C. The microscopic observations are consistent with the changes in macroscopic parameters. The wax is very prone to aggregation and wax crystals show a face-to-face sticking state. As for asphaltenes, the degree of aggregation is weaker than that of wax molecules, and the aggregation state mainly shows two manners: T-shape sticking and face-to-face sticking. This study can provide the theoretical basis for tackling the tank bottom sediment.

Uncovering the key mechanisms of differentiated carbon neutrality policy on cross-regional transfer of high-carbon industries in China

The carbon peaking and carbon neutrality strategy have become China's national strategy. Given the significant regional differences in China, the Chinese government has proposed “one policy for one province” guiding principle for carbon emission reduction. This study takes Tianjin as a representative of “a province-level city with high degree of industrialization and prominent emerging industries”, and Gansu Province a representative of “a province with a low degree of industrialization but the potential for green energy”. Using the integrated modeling frameworkthis study conducts a comparative analysis of the hidden flows generated by inter-provincial inward and outward transfers and extracts a feasible model for carbon neutrality transformation. The study also focuses on carbon emission, GDP changes, carbon hidden flow change in trade and carbon emission reduction path. By comparing the results, this study identifies the mechanism of the industrial spillover effect and carbon emission spillover effect between the two regions. Then it concludes the “cross-regional transfer mode of high-carbon industries” of industrial carbon neutral transformation: more carbon emission allowances are allocated to developing regions represented by Gansu Province, implement regionally differentiated carbon emission reduction constraint policies, and achieve industrial spatial transfer through more inter-provincial transfer. The paper found that in implementing a regionally differentiated carbon emission reduction constraint policy (DE scenario), the transfer of high-carbon industries can achieve the “superposition effect” through inter-provincial transfer. Accordingly, three carbon policy mechanisms for cross-regional transfer of high-carbon industries are summarized.

Evaluation of suitability for passive retrofit of wooden roof considering the specificity of historic buildings

Energy consumption and carbon emissions of buildings must be reduced according to the 2030 carbon neutrality policy. Many aspects of historic buildings should be considered in their improvement because of their historical value. Thus far, a new strategy to lower energy consumption and improve energy performance is required. This study intends to derive an optimal energy efficiency package to reduce the energy consumption of historic buildings. To accurately analyze energy efficiency, the condition of a historic building was evaluated through on-site inspections. The roof retrofit technology scenario was used to reduce energy loss in exposed rafters. The exterior of the building cannot be damaged as it has historical value. This retrofit technology was analyzed to determine the energy-saving effect and economic feasibility of the package to derive the optimal solution. Retrofit techniques were individually analyzed and packaged for the effective preservation of historic buildings. This study compared a total of six scenarios by combining three types of insulation materials, based on the location of internal insulation, to protect the exposed rafters. Considering energy-saving, economic feasibility, and damage weight, the scenario where polyurethane insulation was applied between battens was the best. However, the insulation of the roof must consider fire resistance as per the Building Act of the Republic of Korea. Considering flame-retardancy, the scenario in which glass wool was applied between batten was the best for the target building.

Assessment on Energy Technology Toward Carbon Neutrality Policy Using Multi-Criteria Decision Analysis: A Case of Thailand

The assessment of greenhouse gas (GHG) mitigation technologies creates a knowledge database to support a national strategy to meet Thailand’s GHG emission reduction target. Such a database also makes important contributions to the formulation of research policy and the country’s broader technological development. Thailand needs a strong technological base in order to meet its national policy targets and international obligations for reducing GHG emissions, as well as to reduce the negative effects of economic activity on society and the environment and to create additional value. The goal of this study is to prioritize energy technologies so that Thailand can achieve its carbon neutrality goal by the year 2050. Multi-criteria decision making is applied with quantitative data on GHG mitigation options. Decisions are made based on the technology’s readiness and level of its impact on economic, social and environmental development. Critical issues representing needs and barriers for selected key technologies are analyzed. The results indicate that solar energy and electric vehicle are selected as having the highest priority, followed by energy efficiency and other renewable energy sources. Carbon capture, utilization and storage (CCUS), green hydrogen, and carbon sinks are the last choices with high uncertainty about commercialization.

Carbon Peak Scenario Simulation of Manufacturing Carbon Emissions in Northeast China: Perspective of Structure Optimization

The manufacturing industry is the pillar industry of China’s economy and a major carbon emitter, and its carbon emission reduction efforts directly determine whether the country’s carbon emission reduction target can be successfully met. In the context of the goals of the carbon peak and carbon neutrality policy, we examine the impact of manufacturing structure optimization on carbon emissions from 2003 to 2020 through a spatial econometric model, taking the old industrial centers in Northeast China as an example. We then apply a machine learning model to simulate manufacturing carbon emissions during the carbon peak stage and identify the optimal path for carbon emission reduction, which is important for promoting manufacturing carbon emission reduction in Northeast China. Since the goal of low-carbon economic development has gradually replaced the goal of maximizing economic efficiency in recent years, manufacturing structure optimization has come to focus on energy saving and emission reduction. Therefore, we define manufacturing structure optimization from the dual perspective of technology and energy consumption to broaden the existing research perspective. The results show the following: (1) The overall trend in manufacturing structure optimization in Northeast China is steadily improving, and the level of manufacturing structure optimization from the technology perspective is higher than that from the energy consumption perspective. (2) Manufacturing structure optimization and manufacturing carbon emissions in Northeast China both show a positive spatial correlation. Manufacturing structure optimization in Northeast China can effectively promote carbon emission reduction, and it also has a spatial spillover effect. (3) The carbon emission reduction effect of manufacturing structure optimization from the energy consumption perspective is better than that from the technology perspective, and the carbon emission reduction effect under the institutional innovation scenario is better than that under the baseline scenario and the technological innovation scenario. Focusing on manufacturing structure optimization from both technology and energy consumption perspectives, as well as continuously improving technological innovation and institutional innovation, can help to achieve manufacturing carbon emission reduction in Northeast China.

How does water diversion affect land use change and ecosystem service: A case study of Baiyangdian wetland, China

Baiyangdian wetland is the biggest plant-dominated shallow freshwater wetland in Huabei Plain, providing a wide range of ecosystem services. In the past few decades, the water scarcity and eco-environmental problems resulted from climate changes and human activities have become more and more serious. To relieve the pressure of water scarcity and ecological degradation, the government has implemented ecological water diversion projects (EWDPs) since 1992. In this study, land use and land cover change (LUCC) caused by EWDPs over three decades was analyzed to quantitatively assess the impact of EWDPs on ecosystem services. Coefficients of ecosystem service value (ESV) calculation were improved for regional ESV evaluation. The results showed that the area of construction, farmland and water increased by 6171, 2827, 1393 ha, respectively, and the total ESV increased by 8.04 × 108 CNY primarily due to the increase of regulating service with water area expansion. Redundancy analysis and socio-economic comprehensive analysis showed that EWDPs impacted water area and ESV with threshold and time effect. When the water diversion exceeded the threshold, the EWDPs affected the ESV through influencing LUCC; otherwise, the EWDPs affected the ESV through influencing net primary productivity or social-economic benefits. However, the impact of EWDPs on ESV gradually weakened as time passed, which could not keep sustainability. With the establishment of Xiong'an New Area in China and implementation of carbon neutrality policy, rational EWDPs will become crucial to achieve goals of ecological restoration.

European Court of Justice Returns to Religious Neutrality Policies in Private Workplaces

European Court of Justice Returns to Religious Neutrality Policies in Private Workplaces

Między polityką zaangażowania a pozytywną neutralnością. Libia i Tunezja wobec kwestii Sahary Zachodniej

BETWEEN A POLICY OF ENGAGEMENT AND POSITIVE NEUTRALITY: LIBYA AND TUNISIA ON THE ISSUE OF WESTERN SAHARA The unresolved issue of Western Sahara has been causing serious divisions in the Maghreb region for 48 years, which affects not only political relations, but also economic cooperation. The division into states supporting the independence of Western Sahara and those backing Morocco’s position has very strongly polarized the Maghreb region, as well as practically all states of the African continent. Moreover, during the Cold War, this dispute fed into division between states in the Western camp and those identified with the Eastern bloc and socialism, such as Libya. Tunisia was the only country in North Africa, which consistently tried to implement a policy of positive neutrality and because of that it was doomed to occupy a liminal space not only in the region – between Algeria and Morocco, but also in the bipolar world – between the West and the Eastern bloc. This article aims to present the two countries of Tunisia and Libya from the perspective of 48 years of the Western Saharan crisis. Both states, although they do not have a direct border with the territory of Western Sahara, are sometimes involuntarily, as in the case of Tunisia, involved in the largest regional dispute, which to this day casts a shadow over relations in North Africa.

“Türkiye’yi NATO’dan Hemen Çıkarın”: ABD Kamuoyunda Türkiye-Karşıtı Söylemin İnşası

After the outbreak of the Ukraine-Russia War, Sweden and Finland abandoned their neutrality policies and announced that they would apply for NATO membership. Türkiye declared that it would veto their membership applications, stating that these two countries supported terrorist organizations. This situation alarmed the European member countries of NATO and the United States, and it was stated that Türkiye's veto would cause a rift in the NATO alliance and jeopardize European security. This study analyzes reader comments in the three leading U.S. newspapers: The New York Times, The Washington Post, and The Wall Street Journal. The study was limited to the reader's comments on news about Türkiye's veto between May 19, 2022, when Türkiye announced its objection to Sweden and Finland's NATO membership applications, and June 30, 2022, when the crisis was resolved. The study applies an eclectic methodology and employs a corpus-assisted discourse analysis method. The themes, strategies, and linguistic practices through which Türkiye and Turkish identities are discursively constructed were analyzed. As a result of the analysis, it was concluded that Türkiye's announcement to veto Sweden’s and Finland's membership applications to NATO has fed the anti-Turkish sentiment that dominates U.S. public opinion, especially in the context of Türkiye-U.S. relations that reached a breaking point after 2016. Moreover, it is argued that anti-Turkish sentiment is constructed through “traditional” discourse themes such as the stereotype of the “bad Turk” and Islamophobia, as well as discourse themes that establish the identification of President Erdoğan and Türkiye.

Theoretical Calculations and Experimental Studies of Power Loss in Dual-Clutch Transmission of Agricultural Tractors

Recent carbon neutrality policies have led to active research in the agricultural tractor sector to replace internal combustion engines, making it imperative to minimize power losses to improve efficiency. Dual-clutch transmissions (DCTs) have been employed in agricultural tractors primarily due to their short shift time and smooth shift feel. However, DCTs have a relatively large number of components and complex structures owing to spatial constraints, making it challenging to predict power losses. Therefore, to predict DCT power losses, this study defined oil churning by considering the structural characteristics and oil circulation and comparing and analyzing the theoretical calculation and test results of power losses at different oil levels. Power loss was calculated based on ISO standards and fluid viscosity theory, and tests were performed to verify. We calculated power losses based on the defined oil churning of a DCT in agricultural tractors and confirmed that their consistency in test results improved when reflecting the lubrication state, considering the structural features and oil circulation. In addition, the factors contributing to power loss under low- and high-speed conditions were analyzed by calculating the power loss for each component.

Key Problems and Countermeasures in CO2 Flooding and Storage

AbstractBased on literature research in combination with the practice of CO2 flooding and storage in Jilin Oilfield, this study assesses the key problems in CO2 flooding and storage, proposing the corresponding countermeasures from five aspects of CO2 gas source condition, namely geological condition evaluation, scheme design incoordination with other production methods, economic and effectiveness evaluation, together with dynamic monitoring and safety evaluation. The results show that CO2 flooding is the most economic and effective CO2 storage method. In eastern China, inorganic origin CO2 gas reservoirs are widely developed and are especially the most enriched in the Paleozoic carbonate rock strata and the Cenozoic Paleogene–Neogene system, which provide a rich resource base for CO2 flooding and storage. In the future, CO2 generated in the industrial field will become the main gas source of CO2 flooding and storage. The evaluation of geological conditions of oil and gas reservoirs is the basis for the potential evaluation, planning scheme design and implementation of CO2 flooding and storage. CO2 storage should be below the depth of 800 m, the CO2 flooding and storage effects in low‐permeability oil reservoirs being the best. CO2 geological storage mechanisms primarily consist of tectonic geological storage, bound gas storage, dissolution storage, mineralization storage, hydrodynamic storage and coalbed adsorption storage. The practice of CO2 flooding and storage in Jilin Oilfield demonstratesthat the oil increment by CO2 flooding is at least 24% higher than by conventional water flooding. The most critical factor determining the success or failure of CO2 flooding and storage is economic effectiveness, which needs to be explored from two aspects: the method and technology innovation along with the carbon peaking and carbon neutrality policy support. After CO2 is injected into the reservoir, it will react with the reservoir and fluid, the problem of CO2 recovery or overflow will occur, so the dynamic monitoring and safety evaluation of CO2 flooding and storage are very important. This study is of great significance to the expansion of the application scope of CO2 flooding and storage and future scientific planning and deployment.

Amnesty International’s Human Rights Campaigns and Transnational Democracy in South Korea in the 1970s

This article examines the intersection between Amnesty International(AI)’s global human rights expansion policy and South Korea’s pro-democracy movements in the 1970s. It argues that local pro-democracy actors vernacularized and mobilized AI’s concept of and global campaign for prisoners of conscience, thereby transforming their struggle into a transnational movement. In making this argument, the article highlights a multi-directional conflict over the meaning and uses of human rights between local and international actors. Against the backdrop of seeking to establish a local chapter of AI, pro-democracy actors challenged AI’s political neutrality policy by advocating for South Korean political prisoners as well as for prisoners in other countries; they also challenged the distinction that AI drew between political prisoners and prisoners of conscience. Finding the UN unresponsive to their appeals and recognizing the role of US Cold War policy in buttressing Park Chunghee’s authoritative regime, South Korean pro-democracy actors, acting in concert with liberal internationalists in the US Congress, shifted the primary stage for addressing international human rights abuses from the United Nations to the US Congress. This shift placed the spotlight on US foreign policies that facilitated the South Korean government’s human rights abuses, which in turn led both the US and South Korean government to devise counteractive human rights campaigns that drew on humanitarian and anti-communist rhetoric to preserve the status quo.

The Urgency of China’s Crypto Mining Ban in Relation to the Carbon Neutral Policy 2060

Cryptocurrencies, specifically Bitcoin, which have been developing since 2008, are gaining increasing popularity due to their high value, considered the future of global finance. With its decentralized concept, crypto activities from mining to buying and selling can be carried out by individuals anywhere at any time. Nevertheless, despite its popularity, several countries, including China, have banned crypto activities, including the mining process. This paper further elaborates on why China has banned cryptocurrency mining. In conducting the analysis, the author uses the concept of sustainable development, the concept of a green economy and the concept of environmental security. As a result, this paper finds that the Chinese government banned crypto mining because of the government’s commitment to the Carbon Neutral Policy 2060, where crypto mining is one of the economic sectors that contribute to carbon emissions on a large scale, driving an increase in e-waste and its operations that consume large amounts of energy. This condition contributes to a decrease in the quality of the environment so that its carbon footprint has the potential to become an obstacle for China in realizing its Carbon Neutral Policy. Keywords: carbon neutral policy, China, crypto mining, green economy, sustainable development environment Mata uang kripto, secara spesifik Bitcoin yang marak berkembang sejak tahun 2008, semakin diminati banyak orang karena nilainya yang tinggi sehingga dianggap sebagai masa depan finansial global. Dengan sifatnya yang terdesentralisasi, aktivitas kripto mulai dari penambangannya hingga jual belinya dapat dilakukan oleh individu perseorangan dimanapun dan kapanpun. Namun, terlepas dari popularitasnya, beberapa negara termasuk Tiongkok melakukan pelarangan aktivitas kripto termasuk penambangannya. Tulisan ini mengelaborasi lebih lanjut pertanyaan mengapa Tiongkok melakukan pelarangan penambangan mata uang kripto. Penulis menggunakan konsep pembangunan berkelanjutan, konsep ekonomi hijau, dan konsep keamanan lingkungan. Hasilnya, tulisan ini menemukan bahwa pemerintah Tiongkok melakukan pelarangan penambangan kripto karena komitmen pemerintah terhadap Carbon Neutral Policy 2060, sebab penambangan kripto merupakan salah satu sektor ekonomi yang menyumbang emisi karbon dalam skala besar, mendorong kenaikan sampah elektronik, dan operasinya yang mengkonsumsi energi dalam jumlah besar. Kondisi ini berkontribusi pada penurunan kualitas lingkungan hidup sehingga jejak karbonnya berpotensi menjadi penghambat Tiongkok dalam mewujudkan Carbon Neutral Policy. Kata kunci: kebijakan karbon netral, Tiongkok, penambangan kripto, ekonomi hijau, pembangunan lingkungan berkelanjutan

Balancing Tradeoffs in Climate-Smart Agriculture: Will Selling Carbon Credits Offset Potential Losses in the Net Yield Income of Small-Scale Soybean (Glycine max L.) Producers in the Mid-Southern United States?

There is a need to achieve sustainable agricultural production to secure food, fiber, and fuel for a growing global population. Climate-smart (CS) actions (no-till and cover crops) can reduce carbon emissions and promote soil organic carbon (SOC) storage. Contemporary voluntary carbon markets provide producers with a monetary incentive to adopt CS actions. However, SOC–yield dynamics under CS actions are not well known, making it difficult for producers to judge whether additional income from carbon credits will offset potential losses to yield income. We designed a SOC–yield framework that captures SOC–yield–income dynamics under traditional (reduced tillage, no cover crops) and CS actions. Using a modified structured decision-making approach, we applied the framework to a case study in which producers aim to increase income by selling carbon credits after adopting CS actions. Specifically, we demonstrated how to balance tradeoffs between yield and carbon credit income that arise from tillage and winter cover crop actions (cereal rye, Secale cereale L. and crimson clover, Trifolium incarnatum L.) in a soybean (Glycine max L.) production system in Mississippi. Results indicated that a producer could minimize losses to net yield income by adopting no-till if already using cover crops. There was also evidence that carbon credit income could offset losses to yield income when adopting CS in place of traditional actions. Identifying risks to yield income and SOC storage can help design carbon neutrality policies that have minimum impact on a producer’s income. History: This paper has been accepted for the Decision Analysis Special Issue on Decision Analysis to Advance Environmental Sustainability. Funding: This work was supported by the USDA-ARS [Grants 58-0200-0-002 (Advancing Agricultural Research) and 58-6001-8-003] and the USDA National Institute of Food and Agriculture [McIntire Stennis Project 1020959]. Supplemental Material: The online appendix is available at https://doi.org/10.1287/deca.2023.0478 .

‘The Queen of England wants to bombard Livorno’: The Anglo-Tuscan Crisis at the Turn of the 18th Century (1696–1707)

The government of Cosimo III de’ Medici promoted diplomatic strategies that were essentially aimed at preserving the neutrality of his dominion, so as to protect the economic interests of the Grand Duchy of Tuscany from conflicts between the great European powers at the end of the seventeenth century. In 1696, this policy came into crisis when William Plowman, an English merchant active in Livorno at the end of the seventeenth century, plundered a number of French ships in the Levant, thus triggering a chain effect that caused the consequent Tuscan diplomatic crisis with England. The controversy, which went on for several years, became increasingly popular in English royal circles, until it reached its peak in 1704, when rumours spread in Livorno that the English fleet was ready to bombard the Medicean port. Drawing on sources preserved in Florence, Venice and London, as well as an unpublished correspondence collected by Giovanni Battista Adami, the Tuscan procurator involved in Plowman’s liberation in 1699, this article aims to analyse the policy of neutrality pursued by the Grand Duchy of Tuscany during the Nine Years’ War (1688–1697) through the international clamour provoked by the Plowman case.

Multisectoral drivers of decarbonizing battery electric vehicles in China.

China has made great progress in the electrification of passenger cars, and the sales of battery electric vehicles (BEVs) have exceeded 10%. We applied a life-cycle assessment (LCA) method to estimate the carbon dioxide (CO2) emissions of the past (2015), present (2020), and future (2030) BEVs, incorporating China's carbon peaking and neutrality policies, which would substantially reduce emissions from the electricity, operation efficiency, metallurgy, and battery manufacturing industries. BEVs can reduce cradle-to-grave (C2G) CO2 emissions by ∼40% compared with internal combustion engine vehicles (ICEVs) on the national-average level in 2020, far more significant than the benefit in 2015. Improved BEV operating efficiency was the largest factor driving emission reductions from 2015 to 2020. Looking forward to 2030, China's BEVs equipped with nickel-cobalt-manganese (NCM) batteries can achieve a further 43% of CO2 emissions reductions, among which 51 g km-1 of reduction is from the well-to-wheels (WTW) stage majorly owing to the further cleaner electricity mix, while other vehicle-cycle benefits are mainly from the advancement of battery (12 g km-1) and related metal materials (5 g km-1). We highlight the importance of better material efficiency and synchronized decarbonization through the automotive industrial chain in promoting climate mitigation from transport activities.

Ecology of Yuqing County Carbon Sink Calculation and Ecosystem Protection Measures

Based on the remote sensing statistical data of land use of terrestrial ecosystems in Yuqing County, this paper calculates the amount of carbon sinks in the county according to the existing carbon sink carbon density index, compares the amount of different types of carbon sinks, and analyzes their respective carbon sink potential. The results show that the forest carbon sink is the largest, about 2.2 million tons, accounting for 75% of the total carbon sink in the county, showing the great potential of forest vegetation to absorb CO2 through photosynthesis, followed by the carbon sink produced by dry land (cultivated land), about 400,000 tons, accounting for 13% of the total carbon sink in the county; Although the amount of wetland aquatic carbon sink is small, its carbon density is very large, and it has the advantages of short renewal time and fast carbon sink, so it has great potential and can be artificially regulated to increase carbon sink. Based on the above research and analysis, combined with the spirit of the national carbon peak and carbon neutral policy and the natural law of ecosystem development, three measures to protect and increase carbon sinks in terrestrial ecosystems were put forward: (1) continuing to carry out forestry planting and do a good job in forestry protection; (2) stabilizing the surface water area and developing aquatic carbon sinks; (3) Establish a long-term monitoring system to ensure the contribution of carbon sinks, provide support for the protection of ecosystem and the development of carbon sink potential in Yuqing County from two aspects of science and management, and compare the amount of different types of carbon sinks, and analyze their carbon sink potential. On this basis, combined with the spirit of the national carbon peak and carbon neutral policy and the natural law of ecosystem development, three kinds of terrestrial ecosystem carbon sink protection and increase wording were put forward accordingly, which provided support for ecosystem protection and carbon sink potential development in Yuqing County from two aspects of science and management.

2023/4 Neutrality policy of City of Brussels not found discriminatory (BE)

2023/4 Neutrality policy of City of Brussels not found discriminatory (BE)

중국의 탄소중립 정책이 대중국 무역의존국에 미치는 영향

This study aims to analyze the potential impact of China’s carbon neutrality policy on countries with high dependence on Chinese trade. Through an analysis of the GTAP-E model, this study shows that China’s carbon neutrality policy could intensify competition with other countries in the manufacturing sector. The study finds that China’s carbon neutrality policy could increase living costs in analyzed countries, regardless of their level of dependence on Chinese trade. This is because China’s policy may lead to an increase in the cost of production, which could be passed on to consumers in the form of higher prices. Therefore, it is necessary for countries with high dependence on Chinese trade to develop strategic planning and policy responses to mitigate the potential negative impact of China’s carbon neutrality policy. The findings of this study suggest that there is a need for a coordinated approach to addressing the potential negative impacts of China’s policy.

Research on the coordinated control of large permanent magnet direct drive fan and air conditioner based on finite element method

In recent years China has committed to energy saving and emission reduction. Chinese Government has proposed a strategic policy of carbon neutrality. In the context of energy shortage, the development of sustainable cities and green buildings is a major trend. An important part of energy consumption in cities is the energy consumed by temperature regulation in buildings, and reducing this part of energy consumption can be of great help to the development of sustainable cities. In this paper, our team propose a scheme for temperature regulation with large permanent magnet direct drive fans system and air conditioners. Compare the conventional room temperature regulation scheme which only uses air conditioners with the new room temperature regulation scheme which uses the large permanent magnet direct drive fan and air conditioners by simulating the indoor temperature regulation process. The results of simulation show that the new scheme’s temperature regulation effects are more uniform than the conventional scheme. The new scheme can reach the target Comfort Index of Human Body faster than the conventional scheme, and the energy consumption can be reduced by more than 8%. The paper concludes that the new room temperature control solution is more energy efficient, reduces carbon emissions and helps to achieve the carbon neutrality target.