Document 3e8GdYE3DZzL1gbw6ZJrKJo63

American Society of Heating and Ventilating Engineers Guide, 1925-26 LOG SHEET NO. 4 Date....................................... ......................... Detailed Record of Gas. Analysis Test No. Time COa CO2.+ Oa Oa CO2 + O2 + CO CO N . Remarks 0 LOG SHEET NO. 5 Date.................................... .............. .............. Smoke Readings Test No. No. Time Ringelmann Chart No. Time Ringelmann Chart Remarks v II I Chapter VIII PUMPS FOR HEATING AND VENTILATING EQUIPMENT By Perry West, Member INTRODUCTION THE various kinds of pumps ordinarily used in connection with heating and ventilating installations may be classed under the following heads: 1. Boiler feed pumps. 2. Condensation return pumps. 3. Return line vacuum heating pumps. . 4. Sump pumps. 5. Forced circulation hot-water heating pumps. 6. Circulating pumps for water brine, etc. 7. Refrigeration pumps and compressors. In applying pumps to heating and ventilating systems the following points should be considered: For Boiler Feed, Pumps--the load factor, temperature of the intake water, static head on the pump intake, total pressure against which the pump must discharge, steam pressure available for steam driven pumps, provisions for emergency and breakdown service, method of control; as to whether pumps should be steam, electric or power driven, depending upon the relative first costs and economies taking into con sideration the possibilities of the use of the exhaust from steam driven pumps and any difference in the cost of labor and attention required. For Condensation Return and Vacuum Pumps--method and efficiency of return trapping, degree of tightness of the system, temperature of the condensate at the pump, probable cooling effect of the return piping, lifts (if any) required in the system, length of run of piping from farthest radiator to the pump, the total pressure against which the pump must discharge the total load to be carried, the load factor, the vacuum (if any) to be carried, as to whether the pump is to be automatically controlled from the water-line in a condensate receiver from the vacuum, or from both, the static heads on the suction and discharge, provisions for emergency and breakdown service and as to whether the pump is to be steam, electric or power driven, etc., as above. For all other Pumps--the service to be performed, loads and load factors, emergency and breakdown service, methods of driving and methods of control. Standardsfor Condensation to he Handled--The quantities of condensate 119 I