Low Temper erature H e Heat Pump mps Rocky Mountain Utility - - PowerPoint PPT Presentation

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low temper erature h e heat pump mps
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Low Temper erature H e Heat Pump mps Rocky Mountain Utility - - PowerPoint PPT Presentation

May 18, 2023 48 likes •153 views

Low Temper erature H e Heat Pump mps Rocky Mountain Utility Exchange September 24-26, 2019 Jon Beyer, Tri-State G&T Gary Myers, Tri-State G&T www.peakload.org Ove verview Program Purpose/Goal: To demonstrate and verify

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Jon Beyer, Tri-State G&T Gary Myers, Tri-State G&T

Low Temper erature H e Heat Pump mps

Rocky Mountain Utility Exchange

September 24-26, 2019

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www.peakload.org

Ove verview

  • Program Purpose/Goal:
  • To demonstrate and verify energy efficiency of low temp air source heat

pump in lower ambient temperatures.

  • To show heat pumps can compete with the operating cost of

conventional propane and natural gas units.

  • Participants:
  • EPRI – as research entity
  • Tri-State – as conduit for member system participation
  • Member Homes – as “real-world” application sites
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Equ quipment & & Si Site Sel e Selec ection

  • Equipment
  • Options were researched and advantages compared
  • Why Carrier?
  • Operational and application flexibility
  • Site Selection
  • An application process – open to member systems/member owners.
  • Variety was desired:
  • Fuel – replacing propane, natural gas, older heat-pump technology, etc.
  • Climate – mountains, plains, etc.
  • Structural – ranch, tri-level, slab on grade, etc.
  • Five sites were chosen based on real-world applications and challenges.
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Installation Si Site D e Details

Tri-State G&T Site Number 1 2 3 4 5 Location Sidney NE Dalton NE Cortez CO Socorro NM Bayfield CO

Home Description Single story with conditioned basement Single story with conditioned basement Tri-level Single story

  • n slab with

attached garage Single story

  • n crawl space

with attached garage Number of Conditioned Floors 2 2 3 1 1 Conditioned Floor Area (sf) 2875 3356 1816 1160 2550

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Installation E n Equipm pment De Details

Tri-State G&T Site Number 1 2 3 4 5 Location Sidney NE Dalton NE Cortez CO Socorro NM Bayfield CO

Old HVAC System 3-ton a/c w/93% efficient propane furnace 3.5-ton heat pump w/ electric strip heat 3.5-ton heat pump w/ electric strip heat Evaporative rooftop cooler w/80% natural gas furnace 4-ton a/c w/93% efficient propane furnace Heat Pump (HP) Manufacturer Carrier (Infinity 20 w/ Greenspeed) Carrier (Infinity 20 w/ Greenspeed) Carrier (Infinity 20 w/ Greenspeed) Carrier (Infinity 20 w/ Greenspeed) Carrier (Infinity 20 w/ Greenspeed) Nominal HP Size (tons) 3 3 4 2 3

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EPRI RI L Low Tem emp H Hea eat Pump D Data Ca Captur ure 1 e 1/21/19

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Appl plication – Sidne ney N NE

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Res esul ults – Sidne ney N NE

2019 Avg Temp Feb 20.6⁰F 2019 Avg Jul Temp 72.9⁰F 2018 Avg Jul Temp 73.8⁰F 2018 Avg Feb Temp 25.3⁰F

Stat Setting: 68⁰F /65⁰F  Stat Setting: 74⁰F /73⁰F 

$417 $68 $628 $100

HEATING COST /DEC-APR COOLING COST/MAY-JUL

Site #1 - Sidney (Lindahl)

Low Temp HP Propane Furnace

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Succes Success i is E Evi vident…

Comments from homeowner and CEO of Wheatbelt Public Power District, Tim Lindahl:

“In addition to the savings, the comfort has been a double improvement, both in the winter and summer…”



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Questions?