HVAC Fundamentals by Samuel C. Sugarman

By Samuel C. Sugarman

Updated with chapters on ventilating and hard platforms and HVAC structures, this 3rd variation of a bestseller covers the variety of HVAC structures. The coverages is into elements and controls for air, water, heating, ventilating, and air con and readers will research why one part or method could be selected over one other. New details is incorporated on occupancy convenience, technique functionality, thermodynamics, warmth move, construction envelope conditioned area, heating and cooling load calculations, air duct basics, water pipe basics, variable circulate water structures, refrigeration elements, piping basics, valuable plant water chiller optimization, and the most recent warmth restoration technologies.

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By Samuel C. Sugarman

Updated with chapters on ventilating and hard platforms and HVAC structures, this 3rd variation of a bestseller covers the variety of HVAC structures. The coverages is into elements and controls for air, water, heating, ventilating, and air con and readers will research why one part or method could be selected over one other. New details is incorporated on occupancy convenience, technique functionality, thermodynamics, warmth move, construction envelope conditioned area, heating and cooling load calculations, air duct basics, water pipe basics, variable circulate water structures, refrigeration elements, piping basics, valuable plant water chiller optimization, and the most recent warmth restoration technologies.

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To obtain wet bulb temperatures below 32° Fahrenheit use a standard thermometer with a wick on the sensing bulb. The distilled water on the wick is frozen. The wet bulb temperature scale on the psychrometric chart is along the 100 percent saturation line on the chart (the curved left line Psychrometrics 27 indicated by #3, wet bulb temperatures indicated from 40°F to 85°F). The wet bulb lines run at about a 30 degree angle across the chart as shown by #2 in Figure 3-1 (40°FWB). Dew Point (DP) Temperature Dewpoint temperature is the temperature at which moisture will start to condense from the air.

To obtain wet bulb temperatures below 32° Fahrenheit use a standard thermometer with a wick on the sensing bulb. The distilled water on the wick is frozen. The wet bulb temperature scale on the psychrometric chart is along the 100 percent saturation line on the chart (the curved left line Psychrometrics 27 indicated by #3, wet bulb temperatures indicated from 40°F to 85°F). The wet bulb lines run at about a 30 degree angle across the chart as shown by #2 in Figure 3-1 (40°FWB). Dew Point (DP) Temperature Dewpoint temperature is the temperature at which moisture will start to condense from the air.

The condensate may be returned to the boiler by a gravity return system, a mechanical return system using a vacuum pump (closed system), or condensate pump (open system). Condensate must be trapped and then drained immediately from the system. If it isn’t, the operating efficiency of the system is reduced because the heat transfer rate is slowed. ” Water hammer can occur in a steam distribution system when the condensate is allowed to accumulate on the bottom of horizontal pipes and is pushed along by the velocity of the steam passing over it.

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