UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads.

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Presentation transcript:

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads R-value of the walls, floor, and roof U-value of the windows Sensible Heat Gain Coefficient (SHGC) or Shading Coefficient (SC) of the windows…used to calculate solar gain for cooling loads Number of people Lighting Equipment (Computers, Printers, Cooking, Manufacturing Processes)

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads R-value of the walls, floor, and roof R-value of each layer “Parallel Path Method” U-Value (BTU/hr-ft 2- °F) = 1/R-Value (hr-ft 2- °F/BTU)

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads WALL (TOP VIEW)

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads R-value of the walls, floor, and roof R-value of each layer: ASHRAE Handbook

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads Stud PathInsulation Path Ext. Surface0.17 Sheathing0.77 Insulation19 Stud5.75 Drywall0.56 Int. Surface0.68 TOTAL

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads  Proportional to the total area:  U studpath x A studpath + U insulpath x A insulpath = U total x A total  (1/7.93) x (1/21.18) x 14.5 = U total x 16  U total = BTU/hr-ft 2 -°F  R = 18.3 hr-ft 2 -°F/BTU

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads  Windows  UValue and SHGC from ASHRAE data  UValue and SHGC from manufacturer’s values

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads  Internal Gains:  ASHRAE 62.1 Occupancy density tables  Library = 20 people / 1000 ft 2  Lighting:  Lighting Design Drawings  ASHRAE 90.1 maximum allowable density  1.3 Watts/ft 2

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads

UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads