New Plasser India | Railway Equipment Manufacturing Facility
Location: Karjan, Gujarat, India
Size: 500,000 sqft
Client: Plasser India Pvt. Ltd.
There can be no doubt, that the driver for prosperity and large scale economic growth and a sustainable future will be industry.
While there is a lot of exciting work being carried out in the service industry sector, especially IT and ITES, there is a large scope of improvement and growth in the design environment for the manufacturing industry.
Similarly, a combination of in situ, and industrial technology has been used in the building development itself, to create a system of good quality, fast construction and optimize cost, keeping in view certain incremental changes we could achieve as well as the ability to contract firms to be able to stretch their existing capabilities and achieve the expected quality.
The two most important interventions have been in the design of the thermal mass at the base of the building and the comfort conditions achieved thereby using a combination of conventional cooling methods as well as radian floors and geothermal air tunnels. We introduced a solar PV power plant to utilize clean energy for the comfort conditioning system to ensure that the capital cost of the comfort system becomes a capex without impacting opex over the long term. This was critical since every rupee spent on opex, higher than competition would hurt the financial prospects of product pricing in the long term.
The structure is exposed cast in situ concrete for foundations, plinth, and a PEB completely insulated building above 4.8 meters in height.
The foundation pits were used to lay HDPE pipes for using geothermal energy to allow input air to be cooled prior to passing through AHU’s and TFA’s. A radiant floor cooling system is designed to utilize a secondary circuit of the return water from the main chiller system to cool the floors using PEX pipes embedded in the floor.
The large thermal mass will prevent major thermal shifts in the building. Once equilibrium is achieved after the initial pull-down, the building will utilize very minimal energy to keep the occupants comfortable, using a combination of conventional airflow through large AHU’s, radiant floor cooling, radiant ceiling panels ( in the office area) and air forced through geothermal tubes.
Each occupant of the building will be able to control his or her personal space in the building using a smartphone interface. Once a particular area is not occupied, the intelligent system will /lower all unnecessary lighting and air-conditioning. This will allow the building to save energy and optimize performance without dependence on human behavior.
The rainwater management system is also planned to ensure zero run-offs from the site. The entire site is graded to channel water into large “holding pits, which are in turn connected to recharge wells. Typically, the capacity of the recharge wells slows down as monsoon progresses, owing to the saturation of subsoil conditions.