Document qaBX8XJYY6yQYMbQnpbyoag5E

American Society of Heating and Ventilating Engineers Guide, 1931 Table 1, Inside Temperatures Usually Specified Type or BorLDiBQ Schools-- Class Rooms................................ . Assembly Rooms--...................... Gymnasiums... ............................. Toilets and Baths ..................... Wardrobe and Locker Rooms__ Kitchens.-.................................... Dining and Lunch Rooms.......... Playrooms..................................... Natatoriums..... ............................ Theaters-- Seating Space.____ Lounge Rooms.___ Toilets.......... ........ Hospitals-- Private Rooms..... .................. Private Rooms (surgical)--__ Operating Rooms................... . Wards........ ..... ........ ...... ......... Kitchens and Laundries......... Toilets..................... ................. Bathrooms.......... :.................... Hotels-- Bedrooms and Baths.............. Dining Rooms.... ...... .............. Kitchens and Laundries.____ Ball Rooms.............................. Toilets and Service Rooms..... Homes-- Where 68 deg. is generally the desirable standard of temperature a guarantee of 70 deg. is customarily exacted. Stores........................... ...................................... ................................................................. Public Buildings........................................................................................................... Warm Air Baths............................................................................................................ Steam Baths.................... ......................................-...................... .......................... ....... Factories and Machine Shops................ ................................................................ Foundries and Boiler Shops___ .'.......................................................................... Paint Shops A Deg. Fabb. 68 66 - 68 55-65' 70> 65-68 66 65 - 68 60 - 65 75 ; i i ; = ; i : ; 68-72 68 68 70 70-80 70-95 68 66 68 70-80 70 70 66 65 - 68 68 : ; ' 65-68 68 - 70 . 120 110 60 - 65 50 - 60 80 , | * 1 Table 2. Desirable Indoor Temperatures in Summer Corresponding to Outdoor Temperatures Degrees Outside | Degrees Inside Dry Bulb 95 90 85 80 75 70 Dry Bulb 80.0 78/0 76.5 75.0 73.5 72.0 , Wet Bulb 65.2 64.5 64.0 63.5 63.0 62.5 Effective Temperature 73.4 72.2 71.1 70.2 . 69.3 68.2 Chapter 5--Heat Loss Calculations `red for raising the temperature of the air, the building materials lS ^the material contents of the building to standard inside temperature. a"T, rate at which this additional heat is required depends upon the , *ne 0f the structure and its material contents and upon the e "ffih these are to be heated. This additional heat may be figured and allowed for as conditions re " but inasmuch as the heating system proportioned for taking care qf the heat losses will usually have a capacity about 100 per cent greater than that required for average winter weather, and inasmuch as most buildings may either be continuously heated or more time be allowed for heating-up during the few minimum temperature days, no allowance is made except in the size of boilers or furnaces. INSIDE TEMPERATURES Winter ... The inside air temperature which must be maintained within a building and which should always be stated in the heating specifications, is under stood to be the temperature at the.breathing line, 5 ft. above the floor and not less than 3 ft. from the outside walls. Inside air temperatures, usually specified, vary in accordance with the use to which the building is to be put and'Table 1 presents values which are in conformity with good practice. Effect of Humidification: In connection with inside temperatures for winter where humidifying means are provided, approximately 1 deg. vari ation for each 10 per cent variation in relative humidity should be pro vided. For example: If the relative humidity is raised from a condition of 15 per cent to one of 45 per cent by artificial humidification it is desirable to lower the indoor temperature about 3 deg. as indicated by the Effective Temperature Line on the Comfort Chart. (See Chapter 26, p. 404). The temperatures given in the table are for normal dry air with dew-points approximately equivalent to outdoor air. A reduction in the tempera tures will be required corresponding to the raise of the moisture content by artificial humidification. Temperature at Proper Level: In making the actual heat-loss compu tations, however, for the various rooms in a building it is often necessary to modify the temperatures given in Table 1 so that the air temperature at the proper level will be used. By air temperature at the proper level is meant, in the case of walls, the air temperature at the mean height be tween floor and ceiling; in the case of glass, the air temperature at the mean height of the glass; in the case of roof or ceiling, the air. temperature at the mean height of the roof or ceiling above the floor of the heated room, and in the case of floors, the air temperature at the floor level. In the case of heated spaces adjacent to unheated spaces, it will usually be sufficient to assume the temperature in such spaces as the mean between the temperature of the inside heated spaces and the outside air tempera ture, excepting where the combined heat transmission coefficient of the roof and ceiling can be used, in which case the usual inside and outside temperatures should be applied. (See Table 32, Chapter 3, and discus sion regarding the use of combined coefficients of pitched roofs, unheated attics and top-floor ceilings on p. 39). 83