It should be mentioned that, in a CHP unit, the power generation boundaries depend upon the heat generation of unit and the heat generation boundaries depend on the power generation of the unit [1].
The temperature oscillation and the heat generation per unit heater length are related through Equation 10.
The third parameter pair, V 3 and τ 3, could be correlated to changes of the rate of heat generation, per unit area, in the MEA.
Briefly, the Laplace equation (σ∇ φ=0) was solved in order to determine the heat generation per unit volume due to Joule heating (q JH ): where φ is the electric potential and σ is the electrical conductivity.
In the US, national grid almost 7% of the electrical energy is lost (mostly in the form of heat) between generation units and end users and distribution network is mostly responsible for this.
(M_{g,t}^{2}) is a binary variable that defines when the unit is operating in heat boiler mode and (Q_{g,t}^{m2}) is the heat generation of the unit in heat boiler mode.
When operating as CHP, the power generation is connected to the heat production through a fixed power-to-heat ratio as defined by (7) where (Q_{g,t}^{m1}) is the heat generation of the unit in CHP mode.
Note that the initial heat generation rate per unit volume depends on the initial ratio of 26Al/27Al, which we choose to be in the range 5.0 x 10-5 to 8.0 x 10-7 (Sectiontion 2.1).
A basic natural gas BCHP system containing power generation unit, heat recovery system, hybrid cooling system and storage tank is integrated with solar photovoltaic (PV) and/or thermal collector.
Heat-only unit only provides thermal energy for end users of MG, and its cost can be formulated as follows [14]: begin{aligned} begin{aligned} C_{hk}=alpha _{k}+beta _{k}H_{hk}+gamma _{k}H_{hk}^2 end{aligned} end{aligned} (4 where (alpha _{k}), (beta _{k}), (gamma _{k}) are the fuel cost coefficients of heat-only units; and (H_{hk}) is the heat generation of the heat-only unit k.
A basic natural gas CCHP system containing a power generation unit, a heat recovery system, an absorption cooling system and a storage tank is integrated with solar photovoltaic (PV) panels and/or a heat collector.
