What Is GHP?
The gas-engine-driven heat pump (GHP) is a new-concept cooling/heating system that uses gas instead of electricity as a fuel. A heat pump that uses LNG as a heat source is driven to circulate refrigerants in summer for cooling and in winter for heating.
Uses Clean and Safe Energy
The natural gas used as the major fuel source by GHPs is a clean form of energy that emits almost no pollutants during its combustion, therefore contributing to the protection of the environment. In addition, natural gas is lighter than air, so in case of a leakage, it diffuses away easily, and its ignition temperature is high, making it a safe energy source that is highly unlikely to explode.
Standardizes Energy Demand
Demand for energy peaks in summer, mainly due to the heat. GHP uses gas instead of electricity for cooling, thus lowering the utilization of electricity and ultimately standardizing the demand for electricity throughout the year. It also contributes to decreasing social costs by reducing costs related to the construction and operation of power plants and gas storage facilities.
Effective Cooling and Heating
Because GHP uses the heat arising from generating the engine, its warming-up period is short; and even if the external temperature is low, GHP can reach the desired temperature in a short period of time. GHP uses waste heat from the engine for heating; therefore, despite a drop in the external temperature during extremely cold weather, it has a low decrease in performance. Also, as heat exchange of refrigerants and coolants occurs separately through heat evaporation, heating can be continuously implemented for long periods of time as there is no need to remove the frost created on the external heat exchanger.
Quiet and Pleasant to Operate
Noise and vibration are minimized with the installation of a large low-noise fan, and the lowest levels of indoor noise (31-45 dB) among all coolers and heaters are demonstrated.
GHP uses cheap gas as its main energy source for cooling and heating, and can therefore reduce maintenance expenses by up to 20-30% for electricity cooling and heating. (During cooling, a separate fee system is applied.)
Minimizes Electricity Fees through Low Energy Consumption
The energy required to operate a GHP is equivalent to 1/10 of the energy used to operate an electric air conditioner. Therefore, GHP is capable of not only minimizing electricity fees but also reducing installation fees, as it does not require additional equipment.
Efficient Use of Space
Indoor units are installed on ceilings, whereas outdoor units are installed on rooftops. Therefore, installation of a machine room, cooling tower, chemical pipes, water processing facilities, etc. is not required. In addition, 16 indoor units can be connected to one outdoor unit, thus reducing the space required to install outdoor units.
What Is CNG?
The Compressed Natural Gas (CNG) Refueling System supplies natural gas, which is then compressed and used to charge natural gas cars using a refueling charger.
Background of Introduction
The government is trying to reduce the increasing severity of air pollution caused by the increasing number of cars and to protect the environment by introducing the most optimal alternative of changing all city buses to natural gas vehicles.
CNG Refueling Diagram
|Compressor||Supplies city gas through pipes and compresses it to 250 bars|
|Supply control panel||Distributes compressed gas to storage equipment and refueling chargers|
|Storage equipment||Temporarily stores compressed gas at 250 bars or provides it to cars|
|Refueling charger||Decompresses the compressed gas to 200 bars and measures and supplies it to buses|