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# Heat exchanger

 Heat exchanger Edit

 Recipe 3+ 100+ 10+ 10 → 1 Total raw 8+ 100+ 10+ 10

 Recipe 3+ 100+ 10+ 10 → 1 Total raw 8+ 100+ 20+ 10

 Map color Fluid storage volume Input: 200Output: 200 Health 200 Resistances Explosion: 0/30%Fire: 0/90%Impact: 0/30% Stack size 50 Dimensions 2×3 Energy consumption 10 MW Maximum temperature 1000 °C Mining time 0.1 Prototype type Internal name heat-exchanger Required technologies Produced by

The heat exchanger exchanges heat between a heat connection and water to produce steam.

Heat exchangers produce ~103 steam with a temperature of 500°C every second.

Heat exchangers will not produce steam until they reach 500°C. The steam produced is exactly 500°C hot, even if the exchanger is hotter. Heat exchangers have a heat capacity of 1 MJ/°C. Thus, they can buffer 500 MJ of heat energy across their working range of 500°C to 1000°C, and require 485 MJ of energy to warm up from 15°C to 500°C when initially placed.

## Calculating steam production rate

Heat exchangers produce 103 steam/second.This can be calculated by relying on steam turbine data: A steam turbine consumes 60 steam/second and produces 5.82MW (assuming 500°C steam). This means a single unit of 500°C steam has `5.82MW / (60/s) = 0.097 MJ` of energy. A heat exchanger produces 10 MJ a second, therefore it produces `10MJ / 0.097MJ = 103.0927835` steam per second.

The steam production rate can also be calculated using the energy consumption: 1 Heat exchanger consumes 10MW, so it's putting 10,000,000 joule of energy into heating water/steam per second. To heat up 1 unit of water 1 degree, 200 joules are needed, so the heat exchanger is heating up water by 50,000°C in total. But the water only gets heated up from 15°C to 500°C, so by 485°C. So the 50,000°C are enough to heat up 103 units of steam per second, since `50,000 / 485 = 103.09`. Since steam is produced from water in a 1:1 ratio, this also means that 103 units of water are consumed per second.

## History

• 0.17.67:
• Heat pipes (also in reactors and heat exchangers) glow with high temperatures.
• 0.15.0:
• Introduced
• Doubled the heat capacity of water from 0.1kJ per degree per liter to 0.2kJ