Energy Code Manuals for HVAC Systems, HVAC Equipment, Service Hot Water

摘要

This manual guides engineers inconforming to ASHRAE Standard 90-75 specifications for heating, ventilating, and air conditioning systems. The HVAC Systems and their design parameters are examined. The Code requires that detailed calculations be made to determine heating and cooling loads, and sets limits for the input parameters. The four load design parameters specified are outdoor design conditions, indoor design conditions, ventilation rates, and infiltration rates, all of which are explained and illustrated. Humidity and temperature controls are discussed together with simultaneous heating and cooling. Standardization requirements are given for ventilation systems, the air transport factor, energy recovery systems, piping insulation, air handling ducts, and ductwork. Requirements are also indicated for the efficient maintenance of HVAC equipment and HVAC systems components in new buildings. Included are suppliers' responsibilities and minimum performance levels acceptable for these systems. A discussion on service hot water deals with maximum values of heat loss for water heaters, storage tanks, and associated piping of heating equipment used for domestic, sanitary, and swimming pool purposes. Computational formulas are presented and illustrated with actual case examples.