Gas collection
A system includes a vessel configured to couple with a gas source for drawing gas into the vessel. The vessel is also configured to receive liquid. The system includes an overflow port in fluid communication with the environment external to the vessel. The overflow port is configured to separate gas within the vessel from the external environment. The system also includes an overflow conduit having an end within the overflow port so that when gas pressure within the vessel increases, liquid is received by the overflow conduit. Another system includes a tank defining an air space for receiving gas generated during the biodegradation of biomass feedstock. The second system also includes an exhaust port, a first evaporator, a first condenser, an expansion valve, and a compressor. The second system also includes a heat exchanger, a second evaporator, and a second condenser.
1. A system comprising:
a tank configured to receive biomass feedstock for biodegradation, the tank defining an air space for receiving gas generated during the biodegradation of the biomass feedstock;
an exhaust port coupled with the tank, the exhaust port configured to exhaust the gas generated during the biodegradation of the biomass feedstock from the air space of the tank;
a first evaporator disposed in the exhaust port for recovering heat from the exhaust gas;
a first condenser coupled with the first evaporator;
an expansion valve coupled between the first evaporator and the first condenser;
a compressor coupled with the first condenser;
a coil heat exchanger disposed in the tank for exchanging heat with the biomass feedstock during the biodegradation of the biomass feedstock;
a second evaporator disposed in the air space defined by the tank, the second evaporator coupled with the heat exchanger for recovering heat from the gas generated during the biodegradation of the biomass feedstock; and
a second condenser coupled with the second evaporator.
2. The system as recited in claim 1 , further comprising a separator for separating gas from liquid, the separator coupled between the compressor and the first evaporator.
3. The system as recited in claim 1 , further comprising a mechanical ventilator in fluid communication with the tank, the mechanical ventilator configured to supply air to facilitate the biodegradation of the biomass feedstock.