_NABERS Indoor Environment Guide_BV Edit
... standard for measuring and benchmarking the environmental performance of existing Australian buildings. NABERS is managed nationally by the Office of Environment and Heritage NSW (OEH) on behalf of Australian, state and territory governments. The NABERS approach to rating the environmental performan ...
... standard for measuring and benchmarking the environmental performance of existing Australian buildings. NABERS is managed nationally by the Office of Environment and Heritage NSW (OEH) on behalf of Australian, state and territory governments. The NABERS approach to rating the environmental performan ...
Complete Paper
... Flat plate collectors are most common for residential water- heating and space-heating installations. A flat plate collector consists of an absorber, glazing covers and an insulated box as shown in fig 1. The absorber is sheet of high thermal conductivity metal sheet with tubes integral attached. Th ...
... Flat plate collectors are most common for residential water- heating and space-heating installations. A flat plate collector consists of an absorber, glazing covers and an insulated box as shown in fig 1. The absorber is sheet of high thermal conductivity metal sheet with tubes integral attached. Th ...
International Heat Flow Commission Global Heat Flow Database
... Estimated from literature Corrected for water circulation Medium quality ...
... Estimated from literature Corrected for water circulation Medium quality ...
finite volume analysis of convective heat transfer augmentation from
... natural convection heat transfer from circular pin fin heat sinks subject to the influence of its geometry, heat flux and orientation. The geometric dependence of heat dissipation from heat sinks of widely spaced solid and hollow/perforated circular pin fins with staggered combination, fitted into a ...
... natural convection heat transfer from circular pin fin heat sinks subject to the influence of its geometry, heat flux and orientation. The geometric dependence of heat dissipation from heat sinks of widely spaced solid and hollow/perforated circular pin fins with staggered combination, fitted into a ...
Comparative Study of Rectangular, Trapezoidal and Parabolic
... with or touch the boundary. The solution of a flow problem (velocity, pressure, temperature etc.) is defined at nodes inside each cell. The accuracy of CFD solutions is governed by number of cells in the grid. In general, the larger numbers of cells better the solution accuracy. Both the accuracy of ...
... with or touch the boundary. The solution of a flow problem (velocity, pressure, temperature etc.) is defined at nodes inside each cell. The accuracy of CFD solutions is governed by number of cells in the grid. In general, the larger numbers of cells better the solution accuracy. Both the accuracy of ...
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... respectively. This result is only valid for heat exchange across a heat engine operating between two constant temperature heat reservoirs. These results do not apply when the heat exchange is occurring with heat sources and sinks that do not have constant temperature. The thermal efficiencies of act ...
... respectively. This result is only valid for heat exchange across a heat engine operating between two constant temperature heat reservoirs. These results do not apply when the heat exchange is occurring with heat sources and sinks that do not have constant temperature. The thermal efficiencies of act ...
Final Report.doc
... electronics heat load and maintain constant cooling temperature. Assumption: Cooling by way of the thermoelectric module will be neglected for this investigation since a current is not being applied to the thermoelectric module. 5. Analyze, assess, and make recommendations towards whether heat sink ...
... electronics heat load and maintain constant cooling temperature. Assumption: Cooling by way of the thermoelectric module will be neglected for this investigation since a current is not being applied to the thermoelectric module. 5. Analyze, assess, and make recommendations towards whether heat sink ...
HEAT FLOW THROUGH A TYPICAL WALL IN AKURE By Adeyinka
... The R-Value are also used to describe steady-state heat flow, but in a slightly different way. The R-Value is the thermal resistance to heat flow. A larger R-Value has greater thermal resistance, or more insulating ability, than a smaller R-Value. The big advantage of R-Values is that they can be ad ...
... The R-Value are also used to describe steady-state heat flow, but in a slightly different way. The R-Value is the thermal resistance to heat flow. A larger R-Value has greater thermal resistance, or more insulating ability, than a smaller R-Value. The big advantage of R-Values is that they can be ad ...
Heat loads to Spectrometer Solenoid helium vessel
... • Assuming a residual gas pressure of 10–3 Pa (= 10–2 µbar), we get a heat load of roughly 110 mW on the helium vessel and its appendices • Elastomer o-rings do permeate He gas of the ambient atmosphere • The rotary blade pump used in these tests can backstream helium to yield about 10–1 µbar He pre ...
... • Assuming a residual gas pressure of 10–3 Pa (= 10–2 µbar), we get a heat load of roughly 110 mW on the helium vessel and its appendices • Elastomer o-rings do permeate He gas of the ambient atmosphere • The rotary blade pump used in these tests can backstream helium to yield about 10–1 µbar He pre ...
Alaska Housing Manual - Alaska Housing Finance Corporation
... that are not designed to compensate for settlement will cause the building to move, causing breaks in plumbing lines, windows and doors that leak and don’t close, gaps in interior finishes, breaks in the fasteners holding the building together, and more air leakage because of damage to the air/vapor ...
... that are not designed to compensate for settlement will cause the building to move, causing breaks in plumbing lines, windows and doors that leak and don’t close, gaps in interior finishes, breaks in the fasteners holding the building together, and more air leakage because of damage to the air/vapor ...
The Role of Whitecap Bubbles in Air–Sea Heat and Moisture
... Andreas’s (1990) study of sea spray droplets coming to equilibrium in air provides insight into the thermal evolution of bubbles. All spray droplets with radii of 500 mm or less reach thermal equilibrium in air in less than 10 s. Because the bubbles can be an order of magnitude larger than these spr ...
... Andreas’s (1990) study of sea spray droplets coming to equilibrium in air provides insight into the thermal evolution of bubbles. All spray droplets with radii of 500 mm or less reach thermal equilibrium in air in less than 10 s. Because the bubbles can be an order of magnitude larger than these spr ...
HEATING SYSTEM FOR A PASSIVE HOUSE IN FINLAND Tatiana Dzhigit
... conditions of Finland. The comparison is made by the economic criteria. The study consists of the theoretical part which describes the Passivhaus standard and structural features of the passive house, alternative energy sources and the three heating systems for the passive house; and practical part ...
... conditions of Finland. The comparison is made by the economic criteria. The study consists of the theoretical part which describes the Passivhaus standard and structural features of the passive house, alternative energy sources and the three heating systems for the passive house; and practical part ...
Full-Text PDF
... Phase change materials (PCMs) have been considered as an innovative technology that can reduce the peak loads and heating, ventilating and air conditioning (HVAC) energy consumption in buildings. Basically they are substances capable of storing or releasing energy as latent heat. Because the amount ...
... Phase change materials (PCMs) have been considered as an innovative technology that can reduce the peak loads and heating, ventilating and air conditioning (HVAC) energy consumption in buildings. Basically they are substances capable of storing or releasing energy as latent heat. Because the amount ...
Influence of coupled pinch point temperature difference and
... optimal evaporation temperature with the PPTD of the evaporator at DTT ¼ 20 C are shown in Fig. 3. It can be found that the organic working fluids including R114 and R245fa which cannot achieve the maximum net power output present better performance than R123 and R11. The area of heat exchangers co ...
... optimal evaporation temperature with the PPTD of the evaporator at DTT ¼ 20 C are shown in Fig. 3. It can be found that the organic working fluids including R114 and R245fa which cannot achieve the maximum net power output present better performance than R123 and R11. The area of heat exchangers co ...
public deliverables - Climate for Culture
... Another sophisticated but simple and intelligent housing service system was the wind tower in old Persia. These wind towers provided the building not only with fresh air through the stack draft effect but also provided some cooling effect, which was very important in such arid climates. ...
... Another sophisticated but simple and intelligent housing service system was the wind tower in old Persia. These wind towers provided the building not only with fresh air through the stack draft effect but also provided some cooling effect, which was very important in such arid climates. ...
Occupant comfort in UK offices—How adaptive comfort theories
... energy consumption for electricity was 16% below the ‘Good Practice’ ECON19 Standard [15]. When compared to a Taylormade, mixed-mode building benchmark the energy consumption for heating in the building studied was 10% better than ‘Typical’, while the electricity consumption was almost the same as ‘ ...
... energy consumption for electricity was 16% below the ‘Good Practice’ ECON19 Standard [15]. When compared to a Taylormade, mixed-mode building benchmark the energy consumption for heating in the building studied was 10% better than ‘Typical’, while the electricity consumption was almost the same as ‘ ...
Chapter 3: heat flow
... that core formation could raise the temperature of the Earth by several thousand degrees, enough to completely melt it and drive off most of the more volatile materials as well. It is therefore likely that much of the gravitational energy release was lost during the accretion process by radiation in ...
... that core formation could raise the temperature of the Earth by several thousand degrees, enough to completely melt it and drive off most of the more volatile materials as well. It is therefore likely that much of the gravitational energy release was lost during the accretion process by radiation in ...
Final Draft_v2.pdf
... electronics heat load and maintain constant cooling temperature. Assumption: Cooling by way of the thermoelectric module will be neglected for this investigation since a current is not being applied to the thermoelectric module. 5. Analyze, assess, and make recommendations towards whether heat sink ...
... electronics heat load and maintain constant cooling temperature. Assumption: Cooling by way of the thermoelectric module will be neglected for this investigation since a current is not being applied to the thermoelectric module. 5. Analyze, assess, and make recommendations towards whether heat sink ...
An assessment of thermal comfort in a warm and humid
... student’s learning capacity can be alarming and has therefore necessitated the research study. A lot of research has been carried out in the field of thermal comfort regarding educational buildings in temperate climates. However, very few studies have been published on the comfort of building occupa ...
... student’s learning capacity can be alarming and has therefore necessitated the research study. A lot of research has been carried out in the field of thermal comfort regarding educational buildings in temperate climates. However, very few studies have been published on the comfort of building occupa ...
Full Text - International Journal of Energy and Environment
... at the optimum temperature ratio ω opt , the maximum cooling load of the refrigerator is achieved. The results show the relations between the thermal design parameters and are summarized by figures by considering different values of these thermal design parameters. Figure 2 shows the variation of th ...
... at the optimum temperature ratio ω opt , the maximum cooling load of the refrigerator is achieved. The results show the relations between the thermal design parameters and are summarized by figures by considering different values of these thermal design parameters. Figure 2 shows the variation of th ...
Computational fluid dynamics modelling of the air movement in an
... In the middle of the chamber at x = 1.705 and y = 1.08, a seated CSP with a seated height of 1.2 m is located. The simulation of nostril exhalation for the CSP is illustrated in Figure 3. CO2 supply (i.e. exhalation) through a nostril of 12 mm diameter was set as an inlet supply source and was posit ...
... In the middle of the chamber at x = 1.705 and y = 1.08, a seated CSP with a seated height of 1.2 m is located. The simulation of nostril exhalation for the CSP is illustrated in Figure 3. CO2 supply (i.e. exhalation) through a nostril of 12 mm diameter was set as an inlet supply source and was posit ...
17.1
... b) Heat always flows from warmer objects to cooler objects. c) Adding heat can cause an increase in the temperature of an object. d) Heat cannot be specifically detected by senses or instruments. ...
... b) Heat always flows from warmer objects to cooler objects. c) Adding heat can cause an increase in the temperature of an object. d) Heat cannot be specifically detected by senses or instruments. ...
Measuring the Heat Absorption and Retention Properties of a Solar
... A functioning solar powered autoclave, used to sterilize medical instruments, has the potential to save a full day of labor each week for nurses at health outposts in rural Nicaragua. In addition, a solar autoclave may save lives when several patients are in critical need of sterilized operating equ ...
... A functioning solar powered autoclave, used to sterilize medical instruments, has the potential to save a full day of labor each week for nurses at health outposts in rural Nicaragua. In addition, a solar autoclave may save lives when several patients are in critical need of sterilized operating equ ...
Increase Energy Consumption
... also inhibit evaporational cooling. And second, the complex geometry of the urban surface changes the urban radiation budget. During the day vertical canyon walls trap (i.e. reflect and absorb) short-wave radiation. Night-time losses of infrared energy are also retarded due to the decreased sky view ...
... also inhibit evaporational cooling. And second, the complex geometry of the urban surface changes the urban radiation budget. During the day vertical canyon walls trap (i.e. reflect and absorb) short-wave radiation. Night-time losses of infrared energy are also retarded due to the decreased sky view ...
Thermal Dynamics of Radiant Floor Heating with Wooden Flooring
... play an important role by eliminating characteristics of the heating system that cause little effect despite modification and by isolating which attributes affect the system’s performance greatly. If a hydronic system is selected, several important attributes to simulate include thickness coverin ...
... play an important role by eliminating characteristics of the heating system that cause little effect despite modification and by isolating which attributes affect the system’s performance greatly. If a hydronic system is selected, several important attributes to simulate include thickness coverin ...
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.