I haven’t bent any copper for a few weeks now. Between the heat, a vacation, and some bad habits, the shop has barely been opened. Part of the reason is due to a recent fascination with power plants. Previously, in…
Blog Archives
Ejector Assembly Construction
This is a three part series on refrigeration ejectors. Part I on theory, is Ejectors in Refrigeration – an Expressor, and Part II on manufacturing techniques, Handmade Copper Ejector. There is a lot of video media, so I will jump…
Tagged with: brazing, diy refrigeration, ejector, expressor, heat pump, HVAC, hydrocarbon refrigerant, injector, jet pump, natural refrigerant, propane refrigerant, R-290, r290, refrigerant ejector, refrigerant jet pump
Posted in Refrigeration
Posted in Refrigeration
Ejectors in Refrigeration – an Expressor
Having developed a degree of confidence with copper brazing, and reaching the potential limits of what can be learned, I have decided to move past my original work with the Ebullator. I document my progress with that device in Refrigeration…
Tagged with: diy refrigeration, ejector, ejector refrigeration, exergy, heat pump, HVAC, injector, jet pump, refrigerant ejector, refrigerant jet pump, refrigeration, vapor compression
Posted in Refrigeration
Posted in Refrigeration
Cannibalizing the Ebullator
I’ve moved on, in regards to what I think can be learned from the first flooded evaporator system, I have been calling “The Ebullator”. Far too many limiting features were preventing me from moving on to the next step in…
Amateurish Refrigeration Research
I have a High School Diploma, and that is about the extent of my formal education. My real education comes from years of mechanic jobs, fiddling with and fixing things around the house, building things I need rather than buying…
Tagged with: dehumidifier, diy refrigeration, hc refrigerants, heat pump, organic rankine, propane refrigerant, r290, refrigeration, refrigerator
Posted in Hot Water, Refrigeration, Refrigerator
Posted in Hot Water, Refrigeration, Refrigerator
Refrigeration Test Bench – Part III
In Part I, I shared a lot of media relating to my efforts in building a refrigeration test bench. I intended to build the whole thing from a DIY approach, and utilize a York 210 – Belt Driven Air Conditioning…
The KillCap Catalogue
I enjoy designing vapor compression machines. It all started with a refrigerator. I have thought long and hard on how these mainstays of modern living could be improved and someday I will make some of them a reality. In the…
Tagged with: air conditioner, appropriate technology, dehumidifier, flooded evaporator, heat pump, refrigeration, refrigerator
Posted in Dehumidifiers, Hot Water, Philosophy, Refrigeration, Refrigerator
Posted in Dehumidifiers, Hot Water, Philosophy, Refrigeration, Refrigerator
Future Plans
I’ve been thinking quite a lot about refrigerator designs and what steps I’m going to take in developing them. I tend to take on a lot more than I can chew and then when it all becomes too overwhelming, I…
Tagged with: heat pump, propane, refrigerator, vapor compression system
Posted in Philosophy, Refrigeration, Refrigerator
Posted in Philosophy, Refrigeration, Refrigerator
Excerpts from “Elementary Mechanical Refrigeration” by Fred E Matthews, 1912
The following are several pages taken from the above mentioned book. A similar explanation is more or less copied in “Power’s Principles of Refrigeration” of which I have a 1921 copy. Take special note of the beautiful illustration below. Clicking…
Tagged with: back pressure, condenser, evaporator, heat engine, heat pump, refrigeration, steam engine, temperature pump, thermal potential
Posted in Old Refrigeration Texts, Refrigeration
Posted in Old Refrigeration Texts, Refrigeration
Recycling Hot Water
There are a number of different ways to heat domestic water for bathing, washing clothes, dishes and whatever else people need. Electric Resistive, Natural Gas, Propane, Kerosene, BioMass, Solar, Heat Pumps and even Compost Heaps come to mind. Obviously, some…
Tagged with: appropriate technology, biochar, COP, heat pump, hot water, refrigeration, sustainable, water heater
Posted in Hot Water, Refrigeration
Posted in Hot Water, Refrigeration
Some Old Refrigerating Machines
I recently purchased these two books from abebooks.com. They are the second and fourth editions, 1926 and 1933 respectively. I don’t remember what they cost, but I would have easily payed double. They are filled with illustrations and descriptions of…
Tagged with: evaporator, GE, heat pump, high side float, ice box, low side float, monitor top, refrigeration, refrigerator
Posted in Old Refrigeration Texts, Refrigeration
Posted in Old Refrigeration Texts, Refrigeration
Some Thoughts On Refrigerants
Refrigerants are the blood of a vapor compression system. They are pumped round and round in an infinite loop of compression and expansion. The types of materials selected for use in refrigeration are based on a number of factors, the…
Tagged with: ammonia, appropriate, heat pump, hydrocarbon, refrigerant, refrigeration, refrigerator
Posted in Refrigeration
Posted in Refrigeration
I Caught the Refrigerator Bug
I caught the refrigerator bug again. It happens every few months, I get a job, I quit a job, I change my musical taste, I read a few books; but then, it comes back with a fury. That damned refrigerator…
Tagged with: appropriate technology, heat pump, refrigeration, refrigerator
Posted in Refrigeration, Refrigerator
Posted in Refrigeration, Refrigerator
musings on entropy 