Service Water Heating Systems
ASHRAE Technical Committee
Scope of TC 6.6
TC 6.6 is concerned with two general areas: (1) service water requirements, and (2) design of the system for heating and distributing service hot water. The heating system design requires knowledge of storage capacities, heat recovery systems, etc.
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The TC is responsible for the following chapter in the HVAC Applications Volume.
Service Water Heating Water heating energy use is second only to space conditioning in most residential buildings, and is also significant in many commercial and industrial settings. In some climates and applications, water heating is the largest energy use in a building. Moreover, quick availability of adequate amounts of hot water is an important factor in user satisfaction. Both water and energy waste can be significant in poorly designed service water-heating systems: from over- or undersizing pipes and equipment, from poor building layout, and from poor system design and operating strategies. Good service water-heating system design and operating practices will reduce operating costs and can often reduce first costs. The information in this chapter is thus critical for the sustainable design and operation of many buildings.
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ASHRAE writes standards for the purpose of establishing consensus for: 1) methods of test for use in commerce and 2) performance criteria for use as facilitators with which to guide the industry. ASHRAE publishes the following three types of voluntary consensus standards: Method of Measurement or Test (MOT), Standard Design and Standard Practice. ASHRAE does not write rating standards unless a suitable rating standard will not otherwise be available. ASHRAE is accredited by the American National Standards Institute (ANSI) and follows ANSI's requirements for due process and standards development. Standards may be purchased at the ASHRAE Bookstore.
TC 6.6 is involved with the following standards as a cognizant or co-cognizant TC:
Guideline 12: Minimizing the Risk of Legionellosis Associated With Building Water Systems (co-cognizant with TC6.7) ASHRAE 95: Methods of Testing to Determine the Thermal Performance of Solar Domestic Water Heating Systems ANSI/ASHRAE Standard 118.1: Method of Testing for Rating Commercial Gas, Electric, and Oil Service Water Heating Equipment ANSI/ASHRAE Standard 118.2: Method of Testing for Rating Residential Water Heaters ANSI/ASHRAE Standard 124: Methods of Testing for Rating Combination Space-Heating and Water-Heating Appliances ANSI/ASHRAE Standard 137: Methods of Testing for Efficiency of Space-Conditioning/Water-Heating Appliances that Include a Desuperheater Water Heater ANSI/ASHRAE Standard 146: Method of Testing and Rating Pool Heaters ANSI/ASHRAE Standard 188: Legionellosis: Risk Management for Building Water Systems (co-cognizant with Environmental Health Committee - lead and TC3.6) Proposed Standard: SPC 191P: Standard for the Efficient Use of Water in Building, Site and Mechanical Systems (co-cognizant with TC2.8 - lead)
TIP: If MTG involvement add here otherwise leave blank.
TC 6.6 is involved with MTG OBB: Occupant Behavior in Buildings
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