Sensible Heat Ratio - SHR

Sensible Heat Ratio - SHR - is defined as the sensible heat or cooling load divided by the total heat or cooling load

The Sensible Heat Ratio - SHR - express the ratio between the sensible heat load and the total heat load and can be expressed as:

SHR = qs / qt         (1)

where

SHR = sensible heat ratio (ratio of sensible heat load to total heat load)

qs = sensible heat (kW, Btu/hr)

qt = total heat - sensible heat and latent heat (kW, Btu/hr)

(1) can be modified to:

SHR = cp (to - ti) / (ho - hi)         (2)

where

cp = specific heat capacity of air (kJ/kgoC, Btu/lboF)

to = outlet temperature (oC, oF)

ti = inlet temperature (oC, oF)

ho = outlet enthalpy (kJ/kg, Btu/lb)

hi = inlet enthalpy (kJ/kg, Btu/lb)

General Design Values

  • Auditoriums, Theaters - SHR : 0.65 - 0.75
  • Apartments - SHR : 0.80 - 0.95
  • Banks, Court Houses, Municipal Buildings - SHR : 0.75 - 0.90
  • Churches - SHR : 0.65 - 0.75
  • Dining Halls - SHR : 0.65 - 0.80
  • Computer Rooms - SHR : 0.80 - 0.95
  • Cocktail Lounges, Bars, Taverns, Clubhouses, Nightclubs - SHR : 0.65 - 0.80
  • Jails - SHR : 0.80 - 0.95
  • Hospital Patient Rooms, Nursing Home, Patient Rooms - SHR : 0.75 - 0.85
  • Kitchens - SHR : 0.60 - 0.70
  • Libraries, Museums - SHR : 0.80 - 0.90
  • Malls, Shopping Centers - SHR : 0.65 - 0.85
  • Medical/Dental Centers, Clinics and Offices - SHR : 0.75 - 0.85
  • Motel and Hotel Public Areas - SHR : 0.75 - 0.90
  • Motel and Hotel Guest Rooms - SHR : 0.80 - 0.95
  • Police Stations, Fire Stations, Post Offices - SHR : 0.75 - 0.90
  • Precision Manufacturing - SHR : 0.80 - 0.95
  • Restaurants - SHR : 0.65 - 0.80
  • Residences - SHR : 0.80 - 0.95
  • Retail, Department Stores - SHR : 0.65 - 0.90
  • Other Shops - SHR : 0.65 - 0.90
  • School Classrooms - SHR : 0.65 - 0.80
  • Supermarkets - SHR : 0.65 - 0.85

Related Topics

  • Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort
  • Air Psychrometrics - The study of moist and humid air - air condition - psychrometric charts, Mollier diagrams, air temperature, absolute and relative humidity, moisture content and more

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