نتایج جستجو برای: heat ventilation and air conditioning

تعداد نتایج: 16930568  

2016
Qiang Si Xiaosong Zhang

In this paper we proposed the novel air-conditioning system which combined induction ventilation and radiant air-conditioning. The indoor terminal device is the radiant induction-unit (RIDU). The RIDU is the induction unit combined with the pore radiant panel on which the copper pipes with rigid aluminum diffusion fins are installed. The two-stage evaporator chiller with the non-azeotropic mixt...

Journal: :IOP conference series 2022

Abstract To study the operation and condensation characteristics of an induction radiant air-conditioning system as a novel that combines ventilation air conditioning, convection indoor terminal device unit were studied. The mass transfer coefficient, temperature, rate analyzed experimentally. time required to achieve steady state thermal environment was collected. results indicated primary air...

2012
B. Bueno G. Pigeon L. K. Norford

The use of air-conditioning systems is expected to increase as a consequence of global-scale and urban-scale climate warming. In order to represent future scenarios of urban climate and building energy consumption, the Town Energy Balance (TEB) scheme must be improved. This paper presents a new building energy model (BEM) that has been integrated in the TEB scheme. BEM-TEB makes it possible to ...

Journal: :IOSR Journal of Mechanical and Civil Engineering 2016

2016
Tomasz Jankowski Magdalena Młynarczyk

Ventilation and air conditioning systems are necessary for developing proper parameters of indoor environment in operating rooms. The main task of ventilation and air conditioning in those specific areas consists in creating desirable temperature, reducing the number of microorganisms and the concentrations of hazardous gases and substances in the air, as well as ensuring the proper direction o...

2013
Karin Lundgren Tord Kjellstrom

Global climate change increases heat loads in urban areas causing health and productivity risks for millions of people. Inhabitants in tropical and subtropical urban areas are at especial risk due to high population density, already high temperatures, and temperature increases due to climate change. Air conditioning is growing rapidly, especially in South and South-East Asia due to income growt...

2013
Shiv Lal

The residential and commercial buildings demand increase with rapidly growing population. It leads to the vertical growth of the buildings and needs proper ventilation and day-lighting. The natural air ventilation system is not significantly works in conventional structure, so fans and air conditioners are mandatory to meet the proper ventilation and space conditioning. Globally building sector...

2015
Donghyun Rim Stefano Schiavon William W. Nazaroff

Providing sufficient amounts of outdoor air to occupants is a critical building function for supporting occupant health, well-being and productivity. In tropical climates, high ventilation rates require substantial amounts of energy to cool and dehumidify supply air. This study evaluates the energy consumption and associated cost for thermally conditioning outdoor air provided for building vent...

Journal: :international journal of advanced design and manufacturing technology 0
mehdi najafian alireza bahrami

in this study, the effect of wall orientation on the optimum insulation position in the wall from different perspectives is studied numerically. using crank- nicolson one dimensional transient heat conduction equation is solved for the wall with convection boundary conditions. outdoor temperature is considered as a periodic function of time. since natural night ventilation is used in the buildi...

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