Warming Manchester and Salford
Bannish snow Both cities, just like Birmingham, have extensive canal system is dating back to the industrial revolution. Where the water acts like a massive solar collector. Collecting low grade thermal energy. The clever trick is to use a heat pump which concentrates heat or cold: it is how your freezer creates cold from the warm air of your kitchen! If you feel at the vacuum fridge, there is a hot radiator! Losing the low grade heat at high temperature! We collect the heat into a low pressure gas, at 5° C. Then we increase the pressure on the gas, and suddenly we are losing the same heat at 50° C! Concentrating the pressure on the gas, scales the absolute temperature in proportion to the pressure; the absolute temperature is degrees Celsius, first 273. If we were to double the pressure on the gas, the absolute temperature would shoot up to 546° C: it skills were absolute temperature! So for the French to work we only need to increase the g...