The facade system with ventilated channels for thermal insulation of
... were adopted. The indoor temperature and the relative air humidity were assumed to be respectively 21 ◦ C and 55%. From the outside, the air temperature, the relative air humidity, and the incident solar radiation intensity were specified at 1-h step for a typical year close to the climatic condition ...
... were adopted. The indoor temperature and the relative air humidity were assumed to be respectively 21 ◦ C and 55%. From the outside, the air temperature, the relative air humidity, and the incident solar radiation intensity were specified at 1-h step for a typical year close to the climatic condition ...
Pattern of Radiogenic Heat Production in Rock Samples of
... and emits almost no greenhouse gases. Geothermal energy is a reliable source of power that can reduce the need for imported fuels for power generation. It is also renewable because it is based on practically limitless resource. In addition, geothermal energy has significant environmental advantages ...
... and emits almost no greenhouse gases. Geothermal energy is a reliable source of power that can reduce the need for imported fuels for power generation. It is also renewable because it is based on practically limitless resource. In addition, geothermal energy has significant environmental advantages ...
11Chapter11_MEEB12-W..
... secondarily, a surface can modify air temperature (as when cool air moves across a warm surface). As important as these two determinants of comfort are, they are often not sufficient by themselves. In cooling situations, air motion and relative humidity are significant comfort determinants. For most ...
... secondarily, a surface can modify air temperature (as when cool air moves across a warm surface). As important as these two determinants of comfort are, they are often not sufficient by themselves. In cooling situations, air motion and relative humidity are significant comfort determinants. For most ...
Towards improved performances of mechanical ventilation systems
... be characterised by a set of performances. In principle, one might expect that a system is of good quality. The issue of quality is a key area of concern for many industrial sectors. In the framework of the ISO standard 8402, quality is defined as ‘Totally of characteristics of an entity that bear o ...
... be characterised by a set of performances. In principle, one might expect that a system is of good quality. The issue of quality is a key area of concern for many industrial sectors. In the framework of the ISO standard 8402, quality is defined as ‘Totally of characteristics of an entity that bear o ...
Interaction of clothing and thermoregulation
... Human temperature regulation is based upon a physiological system ‘designed’ for a naked person. Hence, the statement ‘man is a tropical animal’. Human thermoregulation can be described as a feedback system with sensors in the body core and the skin, and effectors in the form of skin blood flow (vas ...
... Human temperature regulation is based upon a physiological system ‘designed’ for a naked person. Hence, the statement ‘man is a tropical animal’. Human thermoregulation can be described as a feedback system with sensors in the body core and the skin, and effectors in the form of skin blood flow (vas ...
Sustainable Intelligent Buildings for Better Health, Comfort and Well
... influences our work effectiveness in the workplace. Poor environments contribute to absenteeism and also to people not working as well as they might which is referred to as presenteeism. This is an enormous cost to the UK whereas good design could save in the order of £135 bn per year by increases i ...
... influences our work effectiveness in the workplace. Poor environments contribute to absenteeism and also to people not working as well as they might which is referred to as presenteeism. This is an enormous cost to the UK whereas good design could save in the order of £135 bn per year by increases i ...
Heat
... Molecules placed on a hot burner will vibrate quickly. They have more kinetic energy than the molecules in a cooler location (a cool pot). Contact between the pot and the burner causes the molecules of the hot burner to collide with the slower molecules of the cool pot. These collisions resu ...
... Molecules placed on a hot burner will vibrate quickly. They have more kinetic energy than the molecules in a cooler location (a cool pot). Contact between the pot and the burner causes the molecules of the hot burner to collide with the slower molecules of the cool pot. These collisions resu ...
Thermal monitoring and indoor temperature predictions in a passive
... indoor maximum, average and minimum temperatures. The formulae were then validated against measurements taken independently in different time periods. In managing the building, the main objective in the winter was to bring up the indoor temperature by direct and indirect solar gains while in the sum ...
... indoor maximum, average and minimum temperatures. The formulae were then validated against measurements taken independently in different time periods. In managing the building, the main objective in the winter was to bring up the indoor temperature by direct and indirect solar gains while in the sum ...
Building Planning and Massing
... Whilst every effort has been made to ensure the accuracy of the information contained in this publication, the Building and Construction Authority, its employees or agents shall not be responsible for any mistake or inaccuracy that may be contained herein and all such liability and responsibility ar ...
... Whilst every effort has been made to ensure the accuracy of the information contained in this publication, the Building and Construction Authority, its employees or agents shall not be responsible for any mistake or inaccuracy that may be contained herein and all such liability and responsibility ar ...
14.2 Temperature Change and Heat Capacity
... In some countries, liquid nitrogen is used on dairy trucks instead of mechanical refrigerators. A 3.00-hour delivery trip requires 200 L of liquid nitrogen, which has a density of 808 kg/m 3 . (a) Calculate the heat transfer necessary to evaporate this amount of liquid nitrogen and raise its tempera ...
... In some countries, liquid nitrogen is used on dairy trucks instead of mechanical refrigerators. A 3.00-hour delivery trip requires 200 L of liquid nitrogen, which has a density of 808 kg/m 3 . (a) Calculate the heat transfer necessary to evaporate this amount of liquid nitrogen and raise its tempera ...
Refurbishment of a multistorey resi- dential building in st. Petersburg to
... The aims of this work are: to know, what the energy consumption building has now and how it will change after refurbishment; to calculate the investment part of changes in envelope which include cost of materials and installation works; to find out how long payback period of renovation will be. In o ...
... The aims of this work are: to know, what the energy consumption building has now and how it will change after refurbishment; to calculate the investment part of changes in envelope which include cost of materials and installation works; to find out how long payback period of renovation will be. In o ...
ECBC Envelope
... light in and adds beauty to the building. Solar radiation coming in through windows provides natural lighting, natural air and heat gain to the space inside, thus significantly impacting the energy usage of the building. The main purpose of a building and its windows is to provide thermal and visual ...
... light in and adds beauty to the building. Solar radiation coming in through windows provides natural lighting, natural air and heat gain to the space inside, thus significantly impacting the energy usage of the building. The main purpose of a building and its windows is to provide thermal and visual ...
Latent heat storage in buildings
... Straight to the point Can heat – or cold – be stored directly in walls and ceilings? Can heat be stored at precisely the temperature level at which it is to be used later on? And can the heat storage effect be used in a controlled manner as regards time and intensity? The answer is a clear “yes” – u ...
... Straight to the point Can heat – or cold – be stored directly in walls and ceilings? Can heat be stored at precisely the temperature level at which it is to be used later on? And can the heat storage effect be used in a controlled manner as regards time and intensity? The answer is a clear “yes” – u ...
Laminar Flow Analysis over a Flat Plate by Computational Fluid
... Computational Fluid Dynamics (CFD) for laminar air flow. The feasibility and accuracy of using CFD to calculate convective heat transfer coefficients is examined. A grid sensitivity analysis is performed for the CFD solutions, and it is used to determine the convective heat transfer coefficients. Th ...
... Computational Fluid Dynamics (CFD) for laminar air flow. The feasibility and accuracy of using CFD to calculate convective heat transfer coefficients is examined. A grid sensitivity analysis is performed for the CFD solutions, and it is used to determine the convective heat transfer coefficients. Th ...
(Revised) Text for Sections 5.7 to 5.9 5.7 WHERE AND HOW MUCH
... steady state is obtained when: (1) the indoor temperature of the building is kept constant and (2) the outdoor temperature registers little daily variation. A dynamic state is more common than a steady state. In the dynamic state, the temperature at a point within a component varies with time due to ...
... steady state is obtained when: (1) the indoor temperature of the building is kept constant and (2) the outdoor temperature registers little daily variation. A dynamic state is more common than a steady state. In the dynamic state, the temperature at a point within a component varies with time due to ...
Entransy Dissipation Analysis for Optimal Design of Heat Exchangers
... generation or the entransy dissipation does not represent the optimum performance for a counter-flow heat exchanger while the minimum entransy dissipation-based thermal resistance corresponds to the maximum heat transfer rate. It is found that the behavior of entropy generation is very similar to th ...
... generation or the entransy dissipation does not represent the optimum performance for a counter-flow heat exchanger while the minimum entransy dissipation-based thermal resistance corresponds to the maximum heat transfer rate. It is found that the behavior of entropy generation is very similar to th ...
Optimal Control Experimentation of Compression
... Air compressor is the critical part of a Compressed Air Energy Storage (CAES) system. Efficient and fast compression of air from ambient to a pressure ratio of 200-300 is a challenging problem due to the trade-off between efficiency and power density. Compression efficiency is mainly affected by the ...
... Air compressor is the critical part of a Compressed Air Energy Storage (CAES) system. Efficient and fast compression of air from ambient to a pressure ratio of 200-300 is a challenging problem due to the trade-off between efficiency and power density. Compression efficiency is mainly affected by the ...
Heat Transfer Through Buildings - Fabric Heat Gain/Loss
... conditions due to solar radiation and ambient temperature has to be considered in the analysis to arrive at realistic cooling loads during summer. In winter, the heating load calculations are based on peak or near-peak conditions, which normally occur early in the morning before sunrise, in addition ...
... conditions due to solar radiation and ambient temperature has to be considered in the analysis to arrive at realistic cooling loads during summer. In winter, the heating load calculations are based on peak or near-peak conditions, which normally occur early in the morning before sunrise, in addition ...
Heat (inside the Earth)
... portional to the temperature of the gas. If we add up the kinetic energies of all molecules in the container we obtain the amount of heat it contains. If heat is added to the container from an external source, the gas molecules speed up, their mean kinetic energy increases and the temperature of the ...
... portional to the temperature of the gas. If we add up the kinetic energies of all molecules in the container we obtain the amount of heat it contains. If heat is added to the container from an external source, the gas molecules speed up, their mean kinetic energy increases and the temperature of the ...
lab module-1
... Thermal conduction is the mode of heat transfer, which occurs in a material by virtue of a temperature gradient. A solid is chosen for the demonstration of pure conduction since both liquids and gases exhibit excessive convective heat transfer. In a practical situation, heat conduction occurs in thr ...
... Thermal conduction is the mode of heat transfer, which occurs in a material by virtue of a temperature gradient. A solid is chosen for the demonstration of pure conduction since both liquids and gases exhibit excessive convective heat transfer. In a practical situation, heat conduction occurs in thr ...
2. Energy Balance of Buildings
... potential for further energy savings is considerable as the shaded pole motors used in conventional ceiling fans are highly inefficient (0.026 < < 0.13). Thus, there exists a big potential for reduction of internal heat gain from fans; it seems logical to improve the efficiency of fans because the ...
... potential for further energy savings is considerable as the shaded pole motors used in conventional ceiling fans are highly inefficient (0.026 < < 0.13). Thus, there exists a big potential for reduction of internal heat gain from fans; it seems logical to improve the efficiency of fans because the ...
Inducing Hypothermia in Neonates on Extracorporeal Membrane
... care workers who have a wide range of training [1]. However, these methods are the slowest to act [1]. Research has shown that external means of cooling can take upwards of 6 hours to reach the target core body temperature [1]. External means of inducing hypothermia also elicits a shiver response fr ...
... care workers who have a wide range of training [1]. However, these methods are the slowest to act [1]. Research has shown that external means of cooling can take upwards of 6 hours to reach the target core body temperature [1]. External means of inducing hypothermia also elicits a shiver response fr ...
Passive and Active Solar Heating Systems
... building are large, comparatively warm water in storage may go unused for a time while the a u x i l i a r y supply i s meeting the large load demand. However, stored solar heat w i l l be called upon when the load i s less severe or when storage temperature has been increased by addition of solar h ...
... building are large, comparatively warm water in storage may go unused for a time while the a u x i l i a r y supply i s meeting the large load demand. However, stored solar heat w i l l be called upon when the load i s less severe or when storage temperature has been increased by addition of solar h ...
Energy Principles in Architectural Design
... Energy flows in the environment involve a complex set of energy transfer mechanisms that interact to produce a given set of environmental conditions. The designer's task is to control and plan the combination of these interactions in order to produce a set of conditions that requires the least amoun ...
... Energy flows in the environment involve a complex set of energy transfer mechanisms that interact to produce a given set of environmental conditions. The designer's task is to control and plan the combination of these interactions in order to produce a set of conditions that requires the least amoun ...
Air Transport in Building Envelope and Construction Process
... importance of air transport and airtightness aspects can be felt. This is due to energy conservation, particularly in passive housing, and to moisture problems and poor air quality and the realisation that more carefully designed, and better controlled, airflow can help to solve such problems. The ...
... importance of air transport and airtightness aspects can be felt. This is due to energy conservation, particularly in passive housing, and to moisture problems and poor air quality and the realisation that more carefully designed, and better controlled, airflow can help to solve such problems. The ...
HVAC
HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers).HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors.Ventilating or ventilation (the V in HVAC) is the process of ""exchanging"" or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air.Ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.