Official Opening of The Greenhouse at Republic Polytechnic
[Photo credit: Republic Polytechnic]
The Greenhouse at Republic Polytechnic was officially opened on 3 August 2022 by Dr Mohamad Maliki Bin Osman, Minister for Prime Minister’s Office, Second Minister for Education and Foreign Affairs.
This new agritech facility houses advanced agricultural solutions that enhance farm productivity and development in support of Singapore’s food resilience and sustainability drive. The Greenhouse is both a teaching and research facility, dedicated to growing plants in naturally ventilated as well as climate-controlled conditions.
Sembcorp provided some of the key sustainable energy and water solutions to enable greater conservation of resources as part of the smart farming project. The Building-integrated Photovoltaics (BIPV) system not only generates energy but serves as the glasshouse roof and allows optimal sunlight through; while the container rooftop was solarised with conventional PV modules to maximise real estate use. Our energy storage system stores excess energy to power the lighting system on demand round the clock, and our water treatment system recycles hydroponic waste.
Building-integrated photovoltaics (BIPV) on the roof generate electricity to supplement the energy used in the facility. There are 90pcs of 195W solar modules and 64pcs of 325W solar modules on the roof of the climate-controlled glasshouse and container laboratories respectively. With about 6 hours* of sunshine on an average day, the solar panels are able to produce green energy to offset 20 – 30% of the energy usage in the facility.
The water treatment system allows the facility to recycle spent nutrient solutions to offset water usage. Solutions pass through a sand filter (to remove suspended solid substances), an activated carbon filter (to remove organic compounds and inorganic contaminants such as free chlorine and odour), reverse osmosis (to filter out dissolved mineral), and Ultra Violet (UV) disinfection (to destroy the microorganisms). The water treatment system is able to recycle up to 80% of wastewater generated, depending on the feedwater quality.