James Watt, the Scotsman in the trio of famous names from April's column, was the oldest of the three, being born in 1736, over 80 years before Joule and Kelvin. He also lived the longest and arguably had more impact on the industrialization of society than any other. His life is a mixture of contradictions, and he is frequently misunderstood and misrepresented.
Three pioneers of engineering science have been immortalized through the use of their names as units in the SI system, representing energy, temperature and power. Do you know who they are? Read on to find out...
Driven by increasing regulatory burdens and an ongoing commitment to improve efficiency and safety in refrigeration technology, low charge systems are presented as the future of the ammonia refrigeration industry at the International Institute of Ammonia Refrigeration (IIAR) Conference in San Diego this month.
Justifying heat pumps for domestic use can be tricky, particularly in older buildings and in colder climates. Operating efficiency is critical to the financial case and small systems operating at cold source temperatures with a need for high temperature hot water are a tough proposition.
There are lots of things that can be used to heat our homes... back in the day we just knew if that if we chopped enough logs through the day the reward would be to sit in front of a roaring fire watching the flames dance and hearing the distinctive crackle of burning pine.
It has been very hard for me to come to terms with the fact that, in the heat pump world, the cooling effect that I value so highly is often thrown away, whereas what I considered to be waste, and to be honest was often a pesky nuisance, is a highly valued commodity and can be sold for a handsome profit. It's a funny old world.
Advancement in low charge ammonia technology was a key discussion point at the 34th International Association for Cold Storage Construction (IACSC) Conference & Expo, celebrated in Florida last month. The phase out of R22 refrigerant by 2020 under the Montreal Protocol and increasing interest in ammonia charge from the EPA and OSHA has resulted in owners and operators of temperature controlled facilities turning to low charge ammonia solutions for new and existing facilities.
Last month, we looked at a future where quantom sensors would provide a wealth of information about system performance and product quality, but there will be little point in getting there if we can't make sense of the sensors in the first place.
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