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!
Heat Exchanger Food Processing: 4 Types You Need to Know?
Heat exchanger food processing guide: plate, tubular, scraped surface, and brazed types. Energy-efficient, hygienic design for dairy, beverage, and food industries. Gemak UK.
Energy-efficient. Hygienic design. UK support.
#HeatExchanger #HeatExchangerFood #FoodProcessing #DairyIndustry #FoodTech #PlateHeatExchanger #ScrapedSurface #TubularHeatExchanger #EnergyEfficiency #HygienicDesign
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
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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
Making a DIY Refrigerated Vest With Battery and Solar Power
Simulating Peak Ice
This year ice in the tank was finally melted between March 5 to March 10 - as 'visual inspection' showed. Level sensor Mr. Bubble was confused during the melting phase; thus it was an interesting exercise to compare simulations to measurements. Simulations use the measured ambient temperature and solar radiation as an input, data points are taken every minute. Air temperature determines the heating energy needed by the house: Simulated heat load is increasing linearly until a maximum 'cut […]
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.
Boiler and Heat Exchanger Tubes Explained for Industrial Use
https://hmtl.in/blogdetail/boiler-heat-exchanger-tubes-importance-industrial-applications
Discover the role of Boiler and Heat Exchanger Tubes in industrial applications. Heavy Metals & Tubes offers top-quality solutions for efficiency.
@heavymetalsandtubes #heavymetaltubes #stainlesssteel #industry #steel #boiler #heatexchanger
Deep Pandya
Gemak
Alterego_Midshipman
elkement
Anton Fellinger
Heavy Metal Tubes
Mike McCaffrey