The Beginning and Evolution: PAFMAC Story
1.Nippon PMAC has manufactured and sold water source heat pump units since its establishment in 1972, and the company name is a coined term comprising the initials of “Prefabricated”, “Module”, “Air-conditioner” and “Cassette” (PMAC).
Each of our water source heat pump units are equipped with internal compressors, allowing you to switch between cooling and heating at will per unit all year round, answering your various air-conditioning needs against heat generation from lighting or electronic equipment in a room and the room’s heat load caused by directional orientation.
Water source heat unit system requires only cooling tower, boiler and circulation pump, greatly reducing equipment room space in comparison to other systems in general, so higher the price of land, higher the merit by using this economical air conditioning system.
Also, there has been an increase in integrating our system by various buildings as a preparation for times of oil crisis, or other emergencies when energy conservation is demanded upon our society, due to water heat source’s outstanding operational efficiency and high heat recovery rate when cooling and heating are intermixed in a building.
In recent years, our innovative technology has provided the solution for increased number of unutilized energy systems that effectively maximizes groundwater or geothermal heat, and same can also be said of Zero-energy buildings (Zeb) demanding more and more of our technology.
2.Before PAFMAC
By end of the 1980’s, as a counter measure to Japan’s chronic power shortage during the summer time, increased number of buildings applied midnight nuclear power surplus to store chilled and hot water during late-nights in a form of thermal energy in order to reduce daytime power consumption.
However, this AC system approach has limitations. It can only provide cooling when chilled water is stored and heating when hot water is stored in late-night thermal storage, not having the option of switching between cooling and heating on an individual unit basis.
In order to solve this dilemma, we collaborated with electric companies and AC engineering firm to develop a new product named PFAS, a unit that combines water source heat pump and fan coil that provides back up support at peak AC usage times and it innovatively provides heating operation with chilled water as well as cooling operation with hot water.
This product became the predecessor to the present PAFMAC. In the initial model, fan coil function was used for daily operation and when the storage capacity became empty the heat pump function would be activated. We envisioned the product application in office buildings, so the fan coil capacity was at #600 and the heat pump capacity was at 18,000BTU.
- PAFMAC gives hotels 4-pipe climate control with existing 2-pipe systems. PAFMAC 通過現有的 2 管系統為酒店提供 管溫度控制
- easy, quick installation, great energy savings 安裝簡單、快捷 、極大的節能
- retrofit, hotel, Japanese HVAC 改造、酒店、日本暖通空調
- room by room installation, less downtime during renovation 逐個房間安裝、減少裝修期間的停機時間
- cost effective, efficient to operate, easy to maintain, air conditioning systems 具有成本效益、操作高效、易於維護、空調系統