Most commonly used controls modulate the condenser fans to keep the head pressure within a specified range (fixed head pressure or saturated condensation temperature
However, as you go up in an atmosphere the temperature decreases, and at some point the temperature drops below the condensation temperature
of a component.
The freon condensation temperature
[t.sub.fc], allowing to estimate the enthalpy [h.sub.3] and pressure [P.sub.c] of freon at the evaporator's exit,
Considering the instability of solar heat source, the generation temperature [T.sub.boi] is in the range of 60-160[degrees]C, the condensation temperature
is 35-45[degrees]C, and the evaporation temperature is -5[degrees]C and keeps being invariable.
Moreover it is able to control the condensation temperature
and thus the heating capacity.
The first observed influence of the condensation temperature
on the formation of the composite was related to the time needed to reach the final value of 1/1 g/g dilutability in water.
As it can be noticed, the condensation temperature
is lower by almost 4[degrees]C at the same conditions of surroundings.
Figure 1 shows the microstructure of the Fe-Cu MLC with the calculated thickness of the iron microlayers of d = 0.23 (m, with the volume fraction of iron [f.sub.Fe] = 0.41, produced at the condensation temperature
of the substrate of [T.sub.s] = 600[degrees]C.
With the TS20-M, flash steam is eliminated and actual steam consumption is drastically reduced thanks to the low condensation temperature
. The exchanger is capable of operating with liquid flow rates of up to 190 kg/s and heat water using steam up to 15Mw with steam at a condensation temperature
The largest size has a capacity of 2.5 to 15 MW at a steam condensation temperature
of 300[degrees]F and 2.5 to 9 MW at a steam condensation temperature