Pressure Reducing Station Design for small scale business from 200 bar to 2 bar pressure
Keywords:
pressure drop, pressure reducing station, compressed natural gas, small scale businessAbstract
This research aims to create a design tool for pressure reducing station for tube cradle 200 bar where the initial temperature of the CNG is -40oC. As an environmentally friendly fuel, many advantages gained when using CNG, among others: huge gas reserves, produced in the country, it's cheap, and friendly environment. Reducing pressure from 200 bar to usable pressure at 2 bar never been easy as cheap. Small business-like restaurants and caterings are looking for fuel sources that cheap and safe in usage. CNG in distribution are tubed in 200 bar cradle and not easy to use instantly, despite its cheap price and high calorie given.
These studies are either research and development methods and the results of this research generate a pressure reducing station, which can lower the pressure to 2 bar. By discharging it into heat pump system, reducing pressure from 200 bar to 2 bar in cheap and safe way are acomplished. The reducing station has been tested as heat exchanger and volume control to maintain it safety and performance. It discusses the process of testing the pressure reducing station, which includes the maximum temperature of water, temperature of gas in the tubing before and after passing the heat exchanger, temperature of the gas in the container header, final temperature of the gas after exiting the regulator, determining the discharge of gas that comes out for 1 minute and the height of the fire. Temperature testing uses a thermocouple tool calibrated with Arduino Uno.
The results of the study are specifications of pressure reducing station equipment, as follows: Maximum temperature of water: 76.5 ℃, temperature of gas in the tubing before passing through the heat exchanger for 5 stage gate opening: 34.75 ℃ - 35.75 ℃, then after heat exchanger: 54.25 ℃ - 54.75 ℃, gas temperature in the header: 36.78 ℃, final gas temperature in the regulator: 45.75 ℃, gas discharge testing for 5 stage gate opening: 13 m3 - 24 m3 and fire height testing for 5 stage gate opening : 33 cm - 56 cm.
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