By Energy Efficiency Victoria
Read Online or Download Choosing a heating system PDF
Similar ventilation & air conditioning books
Laboratory layout advisor third variation is an entire consultant to the advanced means of laboratory layout and development. With functional recommendation and detailedexamples, it truly is an quintessential reference for an individual concerned about construction or renovating laboratories. during this operating guide Brian Griffin explains how you can meet the original blend of necessities that laboratory layout includes.
Residential Energy Auditing and Improvement
This booklet is for strength auditors or retrofitters, whether or not they paintings within the weatherization software or within the deepest area, and is meant to aid them organize for numerous certifications. those comprise courses with BPI, RESNET-HERS, DOE/NREL, and AEE (Association of power Engineers). the cloth during this booklet includes approaches and strategies and is meant to be an academic source.
Construction 2: Environment Science Materials Technology
This publication reviews the recommendations of building know-how and prone, and the rules of environmental and fabrics technology and their purposes. It additionally reports the character and the old improvement of the equipped atmosphere including the jobs of individuals operating within the development undefined.
Plastic Methods for Steel and Concrete Structures
This can be a thoroughly revised, up-to-date and reset version of the textual content that seemed with a similar name through the Eighties. It covers the necessities of the latest layout criteria (BS5950, BS8110 and the Eurocodes) and may attract undergraduate and postgraduate scholars of civil and structural engineering and to training engineers.
- The Future of Thermal Comfort in an Energy- Constrained World
- Radiant Heating and Cooling Handbook
- Advanced Connection Systems for Architectural Glazing
Additional info for Choosing a heating system
Sample text
Hg. 467 Btu/lb da . 818 Btu/lbda. 649 Btu/lb da This is the heat of the vapor. 4205 in. Hg. 73966 in. Hg. 92 in. Hg. What is the relative humidity of the moist air? 0158320 lbv/lbda, find Ws. By Equation (15), Solution: By definition, the 60°F dew-point temperature is the saturation temperature corresponding to the actual partial pressure of the water vapor in the air. 521930 in. Hg. 739660 in. Hg. 739660 in. Hg. 56 % Example 6:What is the enthalpy of moist air at 80°F drybulb temperature and 40% relative humidity?
Hg. 739660 in. Hg. 739660 in. Hg. 56 % Example 6:What is the enthalpy of moist air at 80°F drybulb temperature and 40% relative humidity? 92 in. Hg. 444T). 033020 in. Hg. 413208 in. Hg. 92 in. Hg. Determine (1) humidity ratio, (2) saturation ratio, (3) relative humidity, (4) enthalpy, and (5) specific volume of dry air. 52193 in. Hg. 8129 Btu/lb da By Equation (5), PaVa=RaT, where Pa is the partial pressure of the dry air in the moist air, may be used to find V a . 3981in. 434 psia. —To facilitate engineering computations, a graphical representation of the properties of moist air has been developed and is known as a psychrometric chart.
When you read the values or draw lines, always use a sharp drafting-type pencil and straight edge. Dew point temperatures is also horizontal. Relative humidity lines with shapes similar to the saturation curve appear at regular intervals. A protractor with two scales appears at the upper left of Charts 1 and 2 of Figs. 2-5, and 2-6 respectively. One scale gives the sensible heat ratio and the other the ratio of enthalpy difference to humidity ratio difference. Fig 2-4b. 5 ft 3/lb Td Fig 2-4c. Lines of constant specific volume v on the psychrometric chart Tw = 70 F Td = 80 W W T w Construction of the Psychrometric Chart: The charts of Figs.