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`Designing museums with a naturally stable climate`.
`Designing museums with a naturally stable climate`.

... Massive construction, however, is not a guarantee of a good climate. The Copenhagen Museum of Modern Glass Art (Figure 8) is in a reservoir built within a low hill, which once provided water to the city. Here, one cannot criticise the immense thermal inertia of the semi-infinite walls but the relati ...
434 kB 15 September, 2015 IEE Total Concept
434 kB 15 September, 2015 IEE Total Concept

... building will be used during the renovation. Due to this reason the package cannot be implemented at once but those measures which can be carried out wihtout disturbing the use of the building will be implemented during the renovation. The rest of the measures will be divided between the upcoming ye ...
When it gets colder – heating cables to protect against cold
When it gets colder – heating cables to protect against cold

... conductor. The heat then flows out through the insulation into the surrounding medium. ...
condensation
condensation

... relative humidity (RH). The temperature at which air is fully saturated (ie at 100% RH) is the dew point temperature. If the temperature falls below the dew point temperature, the air cannot contain all the wv present and some wv will condense into a liquid (ie condensation will occur). Water vapour ...
Heating Water: Rate Correction Due to Newtonian Cooling
Heating Water: Rate Correction Due to Newtonian Cooling

... neglect this cooling and show a linear graph of temperature rise versus time when a container of liquid water is heated from 0C to 100C. However, in a laboratory exercise the rising temperature curve is not linear (see Fig. 1). The deviation from linearity can be quantitatively explained by an app ...
Specific Heat Lab Experiment Sixteen p
Specific Heat Lab Experiment Sixteen p

... Purpose: To determine the identity of an unknown metal by determining its specific heat capacity, “c” Materials: unknown metal sample, calorimeter, styrofoam cup, water, beaker, hot plate, string, thermometer, balance Background: If substances of different temperatures are in contact with each other ...
Specific Heat of a Metal
Specific Heat of a Metal

... Celsius degree. Often applied to metallic elements, specific heat can be used as a basis for comparing energy absorption and transfer. To measure specific heat in the laboratory, a calorimeter of some kind must be used. A calorimeter is a well-insulated container used in measuring energy changes. Th ...
PowerPoint 簡報
PowerPoint 簡報

... The operable window allows individuals the ability to "acquire" fresh air if the feel it necessary. The placement of the window encourages individuals to work while sitting rather than standing since that is where the views are held. It also allows interior light to be reflected back into the interi ...
PowerPoint 簡報
PowerPoint 簡報

... The operable window allows individuals the ability to "acquire" fresh air if the feel it necessary. The placement of the window encourages individuals to work while sitting rather than standing since that is where the views are held. It also allows interior light to be reflected back into the interi ...
HEAT GAIN CALCULATIONS
HEAT GAIN CALCULATIONS

... – the amount of solar radiation reaching the interior of a house – the number of electrical appliances running (e.g. computers raise their surrounding temperature) – the amount of wind outside – and individuals' opinions about what constitutes a comfortable indoor temperature ...
The effect of Wind Energy consumption in buildings
The effect of Wind Energy consumption in buildings

... (2) The fraction of total energy cost attributable to aerodynamic influences on surface transmission will approach 10% in large-scale office buildings of conventional design. This depends primarily on the area of glass, and also on the surface-to-volume ratio of the building. The designer is unlikel ...
Substance Specific Heat Capacity
Substance Specific Heat Capacity

... Water has one of the highest specific heats of all substances. It can absorb and give off great amounts of heat energy with little temperature change. It takes a long time to heat water and it takes a long time for water to cool down! Another example: The filling on a hot apple pie burns our tongues ...
Heating Systems for Low Energy Buildings
Heating Systems for Low Energy Buildings

... Energy efficiency ..........................................................................................................................................5 Heat Generation .............................................................................................................................. ...
Summary of Heat Transfer
Summary of Heat Transfer

... The radiation energy transfer is through energy-carrying electromagnetic waves that are emitted by atoms and molecules due to change in their energy content. It means: does not depend on an intermediate material. The rate of thermal energy emitted by a surface depends on its quantity and its absolut ...
Microsoft Word DOC
Microsoft Word DOC

... Multiple unit housing – whether rental or condominium – can be particularly problematic. This type of housing puts residents in close proximity to each other – and each other’s scents and chemical products – and forces them to traverse indoor commonareas maintained by the building management. With t ...
Review of 17.1, 17.2 and 17.3 Name: 1.) When 2 moles of NO burn
Review of 17.1, 17.2 and 17.3 Name: 1.) When 2 moles of NO burn

... 3. In a study of the properties of chlorine, chlorine gas at 25 oC and standard pressure is cooled to a temperature of 150oC. (a) Sketch a cooling curve, including appropriate phase transition temperatures obtained from the periodic table. (b) Label each section of the graph in part (a) with one of ...
Evaporation Technology for Industrial Wastewater Treatment
Evaporation Technology for Industrial Wastewater Treatment

... from 790-15,800 gal/day of distillate production in package units, up to several MGD in large design-build systems. Mechanical Vapor Recompression (MVR) The low electrical energy consumption of MVR evaporators allow treatment on medium to high flow wastewater treatment applications (2,600-53,000 gal ...
Airflow in High-rise Multi-unit Residential Buildings with Respect to
Airflow in High-rise Multi-unit Residential Buildings with Respect to

... ©2013 ASHRAE (www.ashrae.org). From ASHRAE IAQ 2013 Proceedings: Environmental Health in Low Energy Buildings. For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE's prior written permission. ...
TW Series Key Features
TW Series Key Features

... refrigerant. R-410A is a non-ozone depleting refrigerant since it does not contain any chlorine. R-410A is classified as an HFC (Hydrofluorocarbon) refrigerant as it only contains Hydrogen, Fluorine and Carbon. This refrigerant is the industry’s replacement for refrigerant R-22. Coaxial Heat Exchang ...
Lab 15. Heat Capacity
Lab 15. Heat Capacity

... The function of an adiabatic wall is to totally prevent thermal transfer through the walls of the system. In an adiabatic process, the change in internal energy is equal an opposite to the work performed. Unfortunately, the tube we used in the experiment was an open system. The result is that heat e ...
Thermodynamics
Thermodynamics

... For example, A chemical reaction occurs in 200 grams of water with an initial temperature of 25.0°C. As a result of the reaction, the temperature of the water changes to 31.0°C. The heat flow is calculated: ...
HEAT LOAD
HEAT LOAD

... not maximum for all orientations at a given time of the day. By multiplying qconv values by appropriate td values, for the required orientations, a designer can estimate the total solar heat gain for a room at a given time of the day. • The cooling load as a result of transmission through outside wi ...
Summary of Heat Transfer
Summary of Heat Transfer

... Free convection, natural convection: the flow is generated by nonhomogeneous densities caused temperature difference. Forced convection: the flow is produced by external sources (pump, fan). ...
Chem 1010 Tutorials Tutorial 9A – Heat and Work Fall 2013
Chem 1010 Tutorials Tutorial 9A – Heat and Work Fall 2013

... 105 kJ of work is performed on a system during compression as it releases 625 kJ of heat. What is the change in internal energy of the system? ...
Problems
Problems

... Take To= 300 k Cp=1.1kJ/kg For the same temperature drop of 10oC, when the gas cool from 800C to 700C, due to heat loss , what would have been the rate of energy degradation. What interference you can draw from this. 3.2: An ideal gas is flowing through an insulated pipe at the rate of 3.0 kg/s. The ...
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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.
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