#heatexchanger — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #heatexchanger, aggregated by home.social.
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Defeating Bacteria In Hot Water Systems With A Heat Exchanger
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Behold, I hold in my gloved hand the
HEAT EXCHANGER
Soon I shall have a mightily efficient and warm floor. Just as soon as I find some NPT-BSP adapters for those cursed fittings. And do a bunch of plumbing..
#HeatExchanger #Heating #Efficiency -
@CadeJohnson turns out a client has a day job in process equipment. He's done me a basic calculator (like that one you linked to but much more stripped back) which has led me to believe that this toy thing will do my job. Its on the way so we'll see!
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Recently published my Lisp code "DPTherm" on codeberg, Licensed #AGPLv3
A Common Lisp application for preliminary design of Shell & Tube Heat Exchanger. It performs design calculations & Thermo-Hydraulic analysis based on KERN method.
https://codeberg.org/Deep-Pandya/DPTherm
Although I could not utilize more macros & make my program more Lispy, I believe this initial step will demonstrate the potential utilization of #LISP in the field of Thermal Engineering!
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Heat Recovery Ventilator (HRV) — Operating Principle
A recuperator (heat recovery unit) transfers heat from exhaust air to incoming fresh air without mixing the two streams.
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How It Works
Two airflows:
Exhaust air (warm, from indoors)
Supply air (cold, from outside)
They pass through a heat exchanger:
separated by plates or channels
no direct mixing
heat transfers through the material (conduction)
Result: → supply air is preheated
→ exhaust air is cooled
→ overall heat loss is reduced---
Types of Recuperators
1. Plate Heat Exchanger
aluminum or plastic plates
efficiency: ~60–90%
no moving parts
2. Rotary (Wheel) Heat Exchanger
rotating drum
transfers heat and some moisture
efficiency: up to ~85–90%
3. Counterflow Heat Exchanger
air streams move in opposite directions
highest efficiency: up to ~95%
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What Is Transferred
heat (primary)
sometimes moisture (in enthalpy units)
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Efficiency Example
outside: 0°C
indoor: +22°C
after recovery: ~16–20°C
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Advantages
reduced heating energy demand
continuous ventilation without major heat loss
improved indoor air quality
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Limitations
frost formation in winter (needs bypass or preheater)
filter maintenance required
upfront cost
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Core Idea
A recuperator doesn’t generate heat — it recovers and reuses it.
#HVAC #HeatRecovery #HRV #ERV #EnergyEfficiency #Ventilation #IndoorAirQuality #AirExchange #HeatExchanger #SustainableLiving #GreenBuilding #EnergySaving #HomeComfort #SmartHome #BuildingEngineering #ClimateControl #EcoTech #Airflow #FreshAir #LowEnergy #PassiveHouse #NetZero #HomeImprovement #Engineering #CleanAir
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Obsessed with the fact that #rubber heats up when you pull it, and then gets cold when it relaxes. That means you could theoretically build a #HeatExchanger using a physical medium instead of a gas, if you create a large band on wheels that stretches it on one side of a barrier and relaxes it on the other.
https://youtu.be/AFXLZ7FEJc4?t=2080
Edit: now with the proper video.
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Another nice night for a fire, but also a mini project I've wanted to mess with. I got a 10-foot (3 meter) length of copper refrigerant coil, and a small pump. The coil is underneath the logs, nestled in the coals, and the pump has been running for a little while off of a 12 V battery. It's just heating this tote of water, not really doing anything else.
Once I got the fire going, the water got considerably warm at the outlet. I'm not sure it's the optimal amount of flow and area for the pipe, but it seems like it's capturing useful amounts of heat. At this point the water is bathwater-temperature, and it's almost too hot to touch coming right out the outlet tube.
This could be an interesting thing for heating water, either for showering or as something like a radiator, for camping. I've seen people do similar things on Youtube, and just wanted to give it a try.
I may soak my feet in it.
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Installed #homeassistant yesterday in docker. Very easy. Now let's see if I can fire up #mttq and get some #airquality readings in there. Bought a #wioterminal to play with and a dustsensor because I've installed a home-made #heatexchanger to ventilate the room
#iot fun -
Big Chemistry: Liquefied Natural Gas - The topic of energy has been top-of-mind for us since the first of our ancestors c... - https://hackaday.com/2022/12/21/big-chemistry-liquefied-natural-gas/ #liquefiednaturalgas #regasification #currentevents #heatexchanger #liquefaction #engineering #originalart #cryogenic #featured #methane #energy #lng
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my mighty #heatexchanger #dyi is running test.
Utter craftmanship 😁 -
This homemade #heatexchanger #ventilation I like most.
I think I will use wood in stead of 3d printed plastic
https://youtu.be/FUhvuhItX30 -
3D Printed Heat Exchanger Uses Gyroid Infill For Cooling - 3D printing allows the physical manufacturing of some unique geometries that are s... - https://hackaday.com/2022/10/31/3d-printed-heat-exchanger-uses-gyroid-infill-for-cooling/ #powderbedprinter #metal3dprinting #3dprinterhacks #heatexchanger
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The Wanhao Duplicator CNC Heat Sealer - One custom, compliant heat exchanger, coming right up!
[Thane Hunt] needed to find... - https://hackaday.com/2022/02/02/the-wanhao-duplicator-cnc-heat-sealer/ #3dprinterhacks #heatexchanger #polyolefin #3dprinter #indenting #plastic #fusing #gcode -
A Heat Reclaimer For Your Woodstove; The One Thing It’s Not Is Cool - It’s the middle of winter for those of us who live in the Northern Hemisphere, which naturally tur... - https://hackaday.com/2021/01/30/a-heat-reclaimer-for-your-woodstove-the-one-thing-its-not-is-cool/ #heatexchanger #homehacks #woodstove #heating
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How an Engineer Designs a DIY Energy Recovery Ventilator - We have no idea whether [Nick Goodey] is a trained engineer or not. But given the detailed design ... - https://hackaday.com/2020/10/21/how-an-engineer-designs-a-diy-energy-recovery-ventilator/ #energyrecoveryventilator #heatexchanger #greenhacks #homehacks #coroplast #arduino #hubitat #hvac #mqtt #erv
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Echos of the Cold War: Nuclear-Powered Missiles Have Been Tried Before - On August 8th, an experimental nuclear device exploded at a military test facility in Nyonoksa, Russ... more: https://hackaday.com/2019/08/20/echos-of-the-cold-war-nuclear-powered-missiles-have-been-tried-before/ #nuclearreactor #currentevents #heatexchanger #liquidcooling #nuclearweapon #weaponshacks #originalart #sovietunion #radiation #featured #history #rosatom #skyfall #ramjet #russia