Green House Heating
Maintaining a constant temperature and humidity in the greenhouse is the most important issue for the growers apart from growing plants!
Hot water piping and heating by heaters, are two most popular methods to maintain heat and humidity in the greenhouse.
It is a topic, which has been drawing the attention of American Growers at large. The frosty season does not permit the vegetation to grow and the high heating cost prevents the growers from keeping the cold weather away from their crops. The end result is- No vegetation in the frosty season.
Our FPT 1000 model (1MW) produces 2,500,000Kilocalories or 10.5 Gigajoule of energy per hour & consumes 785Kg of wood chips or Biomass with a calorific value of 3200Kcal/kg.
Below is an analysis of the cost of fuels used for heating in Gigajoule terms. One Gigajoule=239,000Kilocalories.
Heavy Oil (HFO) or Diesel: 20$ per Gigajoule of energy (@ 90 cents per litre)
Natural Gas: 6$ per Gigajoule of energy (Nat.Gas @5.5$/mmbtu)
Electricity: 175$ per Gigajoule of energy (@ 7 cents per KWH)
Biomass Incineration: (heating of Boiler for hot water pipes) 3.5$ per Gigajoule (Biomass @40$ per ton) + lots of CO2 a major constituent of Green house gases responsible for pollution & Global warming
Biomass Gasification: 3$ per Gigajoule (Biomass @40$ per ton). It is eco-friendly & the cheapest of all fuels as mentioned above. It provides more energy as compared to combustion of Biomass because steam is supplied along with air into the system and we get additional Hydrogen as a combustible gas & as a result, the pollution is decreased in comparative terms.
Boiler can be effectively heated directly by passing the gas to the burners of the Boilers and then the hot water can be circulated in the hot water pipes in the green house to maintain the optimum temperature required for the healthy growth of the vegetation.
The Gas supply to the burners will be connected to the temperature control system of the boiler so that the temperature may not go beyond a particular demarcated point. This is a Gasification system purely for thermal use.
Hot Gas Mode: Thermal use- Producer Gas is passed through a cyclone to liberate all the dust & soot from the Producer Gas and with Tar in Vapors form at 400deg.C. is fed directly into Burners of Furnaces, Kilns, Dryers, Rolling mills and Heat treatment equipment where color of Product is not a concern.
Cold Gas Mode: For Power Generation, or thermal use in Kilns of Ceramic Industry where color of the Product is of Prime concern, the Producer Gas is subjected to several stages of scrubbing, washing & cooling & then passed to the Tar & Dust separators (specially developed by us), de-moisturizer to liberate the moisture & get 99.9% ultra-clean gas. The SPM (suspended particulate matter) content is 22mg/nm3 whereas it can be up to 50mg/nm3 as per accepted norms. This Producer Gas is good enough for being injected directly into the I.C. Engines modified by us for Producer /Syn-Gas mode of operation or Kilns of Ceramic Industry.
The Hot gas mode is cheaper as the Gas has to be cleaned of dust by air cyclone and Tar is present in vapour form in the hot gas. It is directly fed into the burner and there is a saving of feedstock also.
If the customer is interested in going in for power generation also, then cold gas mode is the only option as the Generating set requires ultraclean gas.
In thermal terms, 1MW provides 2,500,000Kilo calories per hr or 10.45gigajoules energy per hr.(in the terminology of the Canadian growers).& utilize 785kg of biomass or wood chips per hr.
The Gasification system would be costing
Hot Gas mode: $890,000 per MW
Cold Gas mode: $970,000 per MW.
If Boiler also comes the way, then we will verify the Offers for Boilers also