Connecticut Administrative Code › Title 22a - Environmental Protection › 174 - Abatement of Air Pollution › Section 22a-174-3d - Permit-by-Rule for Combined Heat-and-Power Systems

Current through July 10, 2024
(a)
Definitions.
For the purposes of this section, the following
			 definitions apply:
(1) "Actual electrical
			 output" means the gross electrical output measured at the terminals of the
			 generator in units of MWh or kWh;
(2) "Actual heat input" means the gross
			 caloric value of all fuels combusted by the CHP system in MMBtu;
(3) "Actual system efficiency" means, for a
			 CHP system, the sum of the actual thermal output and actual electrical output
			 as MMBtu divided by the actual heat input based on the higher heating value,
			 and measured as a percent;
(4)
			 "Actual thermal output" means the total energy output of thermal energy of the
			 CHP system in MMBtu;
(5) "Annual
			 capacity factor" means the ratio between the actual heat input to a CHP system
			 from an individual fuel or combination of fuels during a period of 12
			 consecutive calendar months and the potential heat input to the CHP system from
			 all fuels had the unit been operated at 8,760 hours/year at the maximum design
			 heat input capacity;
(6) "Combined
			 heat-and-power system" or "CHP system" means a generation unit that
			 simultaneously produces both electric power and thermal energy from a single
			 source and that has a design system efficiency equal to or greater than
			 55%;
(7) "Design system efficiency"
			 means, for a CHP system, the sum of the full load design actual thermal output
			 and electric output divided by the heat input;
(8) "ISO conditions" means the International
			 Organization for Standardization conditions used by the gas turbine industry,
			 which are 59°F, 14.7 pounds per square inch absolute and 60% relative
			 humidity;
(9) "Maximum design heat
			 input capacity" means the ability of a CHP system's generation unit to combust
			 a stated maximum amount of fuel, or combination of fuels, on a steadystate
			 basis as determined by the physical design and characteristics of the
			 generation unit;
(10) "Nameplate
			 capacity" means, starting from the initial installation of a generator, the
			 maximum electrical generating output (in MW) that the generator is capable of
			 producing on a steady-state basis and during continuous operation, when not
			 restricted by seasonal or other derates, as specified by the manufacturer of
			 the generator. If the owner makes any subsequent physical change in the
			 generator resulting in an increase in the maximum electrical generating output
			 (in MW) that the generator is capable of producing on a steady-state basis and
			 during continuous operation, when not restricted by seasonal or other derates,
			 such increased maximum amount as specified by the person conducting the
			 physical change shall be considered the "nameplate capacity;"
(11) "Nearby" means, for a building, situated
			 at a distance from the source less than or equal to five times the lesser of
			 the building height or maximum projected building width;
(12)
"
Shutdown" means the
			 cessation of operation of a CHP system for any purpose;
(13) "Startup" means the setting in operation
			 of a CHP system for any purpose;
(14) "Tune-up" means to perform maintenance
			 and adjust equipment to a proper or required operating condition in accordance
			 with the manufacturer's written recommendations; and
(15) "12-month rolling aggregate" means the
			 sum of a variable over the most recent 12 calendar months, computed
			 monthly.