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

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Presentation on theme: "UMASS AMHERST Continuing & Professional Education GeoScience Series Geothermal Heat Pumps: Concept to Completion Heating and Cooling Loads."— Presentation transcript:

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

2 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)

3 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)

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

5 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

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

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

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

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

10 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 TOTAL7.9321.18

11 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 1.5 + (1/21.18) x 14.5 = U total x 16  U total = 0.05461 BTU/hr-ft 2 -°F  R = 18.3 hr-ft 2 -°F/BTU

12 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

13 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

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

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

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

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

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


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