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Artigo Revisado por pares

Xiangzhao Meng, Bingfeng Yu,

... distributions in chambers, while the performance of the supply-air openings for each chest determines the character of ... research on the air flow performance at the supply-air openings to improve the service performance, furthermore, to ... In this study, the airflow performance at the supply-air openings in a BCD-190W type household frost- ... adopted. The velocity distribution performance of typical rectangular supply-air openings in the refrigerator were measured. In addition, ... problem in flow rate and location design of supply-air openings were presented on the basis of the ...

Tópico(s): Aerodynamics and Fluid Dynamics Research

2009 - Elsevier BV | Applied Thermal Engineering

Artigo Revisado por pares

Shuangshuang Liang, Bozheng Li, Xue Tian, Yong Cheng, Chunhui Liao, Jianxin Zhang, Dong Liu,

... aimed to derive out the optimal ranges of supply air temperature and velocity so as to achieve both ... experimental chamber to examine the influence of warm supply air on indoor airflow pattern as well as indoor thermal environment. The results revealed that the supply air temperature and velocity affected thermal comfort and energy ... experiments, 42 cases with combinations of six different supply air velocities and seven different supply air temperatures were analyzed. The supply air temperatures and ...

Tópico(s): Wind and

2021 - Elsevier BV | Journal of Building Engineering

Artigo Acesso aberto Revisado por pares

Ye Jin, Hua Qian, Jianchao Ma, Rong Zhou, Xiaohong Zheng,

... investigation is conducted to evaluate the effects of supply air velocity and angle on cutting off performance. Simulation ... ward, indicating satisfying performance of air curtains. Increasing supply air velocity is demonstrated to be conducive in forming full air curtains, whereas an excessively high supply air velocity may be of adverse effects by entraining exhaled flow. Besides, the supply air angle is also critical due to its coupling with supply air velocity. It is found that larger angle (0°- ...

Tópico(s): Food

2020 - Springer Science+Business Media | Building Simulation

Artigo Revisado por pares

Gang Wang, Li Song,

... and return air dampers are modulated to seek supply air temperature at its setpoint. The supply air temperature is typically set at 55 F (13 ° ... These facts provide an opportunity to use higher supply air temperature to reduce or eliminate mechanical cooling and terminal box reheat. On the contrary, a higher supply air temperature requires increased air flow as well as ... optimization question is formed, through which an optimal supply air temperature is identified to minimize total energy consumption. ...

Tópico(s): Building Energy and Comfort Optimization

2012 - Elsevier BV | Energy and Buildings

Jornais Acesso aberto

... Mr Roosevelt's Future Concentration on Danzig Organising Supply Air Raid Precautions The London & Lancashire Insurance Co. Ltd ...

1939 - Gale Group | The Economist

Artigo Revisado por pares

Wei Chen, Sheng Shang, Baolong Wang, Xianting Li, Yang Cao, Wenxing Shi,

... However, they waste a large amount of heat. Supply-air humidification provides a beneficial effect on the efficiency of heat recovery, but the effects of supply-air humidification on the thermal performance of combustion and ... experiment was conducted to investigate the effects of supply-air humidification on the thermal efficiency and emissions of a domestic boiler. The results indicated that supply-air humidification is beneficial for the improvement of the ... ratios were 1.3 and 1.1, respectively. Supply-air humidification had a significant effect on the condensing ...

Tópico(s): Thermochemical Biomass Conversion Processes

2019 - Elsevier BV | Energy and Buildings

Artigo Revisado por pares

Xiaoliang Shao, Shukui Liang, Xianting Li, Chao Liang, Shuai Yan,

... to improve environmental quality. The independent effect of supply air and contaminant source can be quantified using accessibility ... rooms with air recirculation devices, the effects of supply air and contaminant source cannot be described directly owing ... between steady contaminant distribution and each of independent supply air and contaminant sources with air recirculation, based on ... accessibility is defined to evaluate the effects of supply air and contaminant sources. The reliability of the proposed ...

Tópico(s): Indoor

2020 - Elsevier BV | Building and Environment

Artigo Revisado por pares

Fredrik Engdahl, Dennis Johansson,

... with a certain air flow at a certain supply air temperature. To minimize the system energy use, an optimal supply air temperature can be set dependent on the load, ... outdoor relative humidity. The theory for an optimal supply air temperature is presented and the heating, ventilation and ... conditioning (HVAC) energy use is calculated depending on supply air temperature control strategy, average U-value of the ... outdoor climates. The analyses show that controlling the supply air temperature optimally results in a significantly lower HVAC ...

Tópico(s): Refrigeration and

2003 - Elsevier BV | Energy and Buildings

Artigo Revisado por pares

Xia Song, Lun Zhang, Xiaosong Zhang,

... a heating source and a cooling source to supply air with the required temperature and humidity ratio. This ... results demonstrate that certain air states (fresh air, supply air, and return air) correspond to one particular solution ... temperatures of the heating and cooling sources, the supply air state is more influenced by the latter. At ... fixed temperature, a lower humidity ratio of the supply air demands a significant increase in the temperature of ... fixed humidity ratio, a lower temperature of the supply air requires lower temperatures for both sources, with a ...

Tópico(s): Solar Energy Systems and Technologies

2018 - Elsevier BV | Energy

Artigo Revisado por pares

S.A. Nada, Hesham M. El-Batsh, H.F. Elattar, Nor Merlisa Ali,

... Fluent 6.3), to understand the effects of supply air temperature, supply air velocity, space height and number of supply air diffusers on the performance of the air conditioning ... and energy saving than OHAD system, (iii) the supply air velocity and temperature, number of diffusers and height ... performance and thermal comfort obtained at 18 °C supply air temperature, 0.8 m/s supply air velocity and proper numbers and distributions of supply diffusers, (v) the percentage of energy saving due ...

Tópico(s): Infection Control and Ventilation

2016 - Elsevier BV | Journal of Building Engineering

Artigo Revisado por pares

Gabriel Rojas, Rainer Pfluger, Wolfgang Feist,

... the living room as a pure overflow zone. Supply air nozzles are only installed in bedrooms. This way the supply air is used most effectively and supply air rates can be reduced while still maintaining good ... remained, if the fresh air coming from the supply air rooms mixes well enough with the living room ... for certain living room geometries (e.g. opposite supply-air-room and extract-air-room doors). The results ...

Tópico(s): Wind and

2015 - Elsevier BV | Energy and Buildings

Artigo Revisado por pares

Tao Lü, Xiaoshu Lü, Charles J. Kibert, Jari Puttonen,

... to-air heat recovery systems, as measured by supply air temperature efficiency, is an important energy saving strategy ... regulated by building codes. The high nonlinearity of supply air temperature efficiency with airflow rate in a run- ... heat recovery system makes the trend prediction of supply air temperature efficiency especially challenging for field measurement. This ... proposed that establishes a linear relationship between the supply air temperature increment across the supply air heat exchanger ...

Tópico(s): Adsorption and Cooling Systems

2015 - Elsevier BV | Energy and Buildings

Artigo Revisado por pares

Wenhui Ji, Ping Wang, Tao Du, Zili Zhang,

... in the test chamber with WANV under different supply air conditions (air velocity and temperature). The shear-stress ... near-wall region is observed regardless of the supply air velocity. Furthermore, a correlation between the air velocity ... of WANV is significantly improved by decreasing the supply air temperature. Additionally, the impact of supply air conditions on the cooling performance is quantified using ... releasing effectiveness index, which suggests that the optimal supply air velocity is approximately 4 m/s in hot ...

Tópico(s): Wind and

2019 - Elsevier BV | Renewable Energy

Artigo Acesso aberto Revisado por pares

A.E. Kabeel, Mohamed Abdelgaied, Ravishankar Sathyamurthy, T. Arunkumar,

... the other is utilized to pre-cool the supply air inlet to the room. The effects of the ... internal baffle as a pre-cooling unit, the supply air temperature reduced by 21% and the coefficient of ... inlet temperature from 25 °C to 45 °C, supply air temperature increases from 12.7 °C to 14. ... increases from 1.87 to 2.84, and supply air relative humidity increases from 76.7% to 77. ... inlet temperature from 70 °C to 110 °C, supply air temperature dropped from 15.9 °C to 10.9 °C, supply air relative humidity dropped from 82.7% to 71. ...

Tópico(s): Energy and Environmental Systems

2017 - Elsevier BV | Alexandria Engineering Journal

Artigo Acesso aberto Revisado por pares

Dileep Kumar, Abdul Ghafoor Memon, Rizwan Ahmed Memon, Intizar Ali, Nataša Nord,

... energy and financial losses. The parameters such as supply air flow rate, supply air temperature, ambient air speed, and the convective heat ... increases with an increase in insulation thickness and supply air temperature, whereas it decreases with higher supply air flow rate. It is estimated that the minimum ... from the duct so affecting the conditions of supply air. Proper insulation thickness and operating parameters are important ...

Tópico(s): Refrigeration and

2017 - SAGE Publishing | Building Services Engineering Research and Technology