| go-to person: | Razzy |
| interested: | feel free to add yourself |
| Why?: | waste to resource, money efficient |
| subgoals: | low cost, energy efficient heating to passive workshop/wood cabin |
| missing: | freezer, wood cabin, 10 man-hours |
info:
Old freezer:
input 100W
freeze 14l of water in 24 hours
heating transport: (((333kJ/kg * 14kg) / 24h) /3600s)=54W
heating efficiency: ((100+54)/100) * 100=154%
https://en.wikipedia.org/wiki/Enthalpy_of_fusion
http://www.lenntech.com/calculators/energy/energy-cost-water.htm
New freezer
input 23W
freeze: 38l of water in 24h
heating transport: (((333kJ/kg * 38kg) / 24h) /3600s)=146W
heating efficiency: ((146+23)/23) * 100=7347%
http://mraznicky.heureka.cz/liebherr-gtp-4656/specifikace/#section
Commercial product (heat-pump):
input:3,1kW
output:15kW
heating efficiency: ((15)/3,1) * 100=483%