imoinsa has supplied a number of gensets - 1 x HTW-1260 T5, 1 x HTW-1745 T5 and 2 x HTW-2030 T5 to the Sappaya-Sapasathan, also known as Thailand's new parliament building. This is an important site which serves as the meeting place for the Thailand National Assembly. It is located in the Dusit District in Bangkok, on the east bank of the Chao Phraya River, and spans approximately 424,000m², making it the world's largest Parliament building.
The building houses two main chambers, one for the House of Representatives, and the other for the Senate. It also includes various facilities such as museums, seminar rooms, banquet halls and a convention centre. Hence, ensuring reliable power supply is extremely important considering its importance in the national legislative processes.
HIMOINSA generators powered by Mitsubishi engines, packed with Stamford alternator and CEA7 controller, in total of 5.5MW of HIMOINSA power, are installed in the new parliament building, to provide reliable and high-efficiency emergency back-up power supply.
With advanced technology which allows integration with domestic power grids, in case of grid failure, the gensets can operate automatically within seconds to guarantee a swift recovery of all essential services, provide sufficient and efficient power to support the daily operation of the parliament building. To facilitate the remote radiator, heat exchangers are installed to transfer excess heat from the engine coolant to the water-cooling system. The process is crucial for managing the engine's temperature, which regulates the heat produced during the engine's operation, ensures safe and efficient operation, prevents overheating and maintains optimal performance.
The weather in Bangkok can be extremely hot, especially during its dry season with daytime temperature reaching exceeding 38°C or so. Also, due to the city’s dense urban environment and limited green spaces, Bangkok is experiencing ‘urban heat island’ effect. The new parliament building is seated in the city centre where temperatures are even higher compared to surrounding rural areas. To prevent overheating issues that could lead to generator failure or shutdowns, the gensets are packed with high-powered fans and electronic control panels, allowing the gensets to perform optimally even at high temperatures.
About the gensets:
*HTW-1260 T5 - Himoinsa's HTW-1260 T5 is an 11 kilogram diesel genset based around a 4-stroke-cycle engine type manufactured by MITSUBISHI. It has cylinders arrangement of 12V, 170 x 180 mm bore and stroke, 49.03 L of displacement, a total oil capacity of 335 L and it can hold up to 400 L of fuel. This engine has a standard air, fuel and oil filter, an oil temperature sensor, low coolant level sensor and exhaust gases compensator. Its generator has 4 poles with frame mountings of S-0 21" and H class insulation. The engine's maximum exhaust temperature is 520°C with a maximum allowed back pressure of 600 mm H2o.
*HTW-1745 T5 - this uses a Mitsubishi S16R PTA diesel engine with four strokes-cycle -it works at 1450 kW prp output and a 1590 kW standby setup. This uses a direct injection body and a turbocharged and aftercooled unit. The engine has a 16V arrangement and uses a 170 x 180 mm bore and stroke setting with a 65.37L displacement. It relies on a water coolant and can manage SAE 30 or 40 oil needs. This is made with a 14:1 compression ratio. It uses 374.65 litres per hour at a standby setup and a 341.66, 259.68 and 183.44 litres per hour total for 100, 75 and 50% usage. This also works at 107.77 litres per hour for 25% use. There is a 0.8 g/kwh consumption rate for lube oil needs and the engine works with 368 litres of oil at a time. The engine also features an electrical governor, a 340 mm inner diameter, a dry air filter and a low coolant level sensor. There is a 24V electrical system and WT and OP sensors plus bodyguards.
* HTW-2030 T5 - 2033 kVA generator set (Soundproof) Three phase | 50 Hz | Diesel. This is powered by a Mitsubishi engine and features a STAMFORD alternator. It meets the following standards:
- 2006/42/CE Machinery safety.
- 2014/30/UE Electromagnetic compatibility.
- 2014/35/UE electrical equipment designed for use within certain voltage limits
- 2000/14/EC Sound Power level. Noise emissions outdoor equipment. (amended by 2005/88/EC)
- 97/68/EC Emissions of gaseous and particulate pollutants. (amended by 2002/88/EC & 2004/26/EC)
- EN 12100, EN 13857, EN 60204
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