LESSONS OF EASTER ISLAND
March 17th, 2016
Some observers like to see Easter Island as a metaphor for the modern world. However, it is importan[...]
THE ROLE OF PROPERTY RIGHTS AND OPEN ACCESS
March 17th, 2016
A presumption underlying the analysis here is that property rights were incomplete, perhaps not to t[...]
ENVIRONMENTAL IMPACTS AND OTHER TECHNICAL PROBLEMS
March 17th, 2016
Geothermal power stations have their own unique developmental, operational, technical, and environm[...]
Simulation of Easter Island
March 17th, 2016
Perhaps the most revealing method of analysis of this dynamic system is through simulation. It is po[...]
Population Growth
March 17th, 2016
To describe population growth, we adopt the linear form used by Lotka and Volterra in their original[...]
GEOTHERMAL POWER STATIONS
March 17th, 2016
The total installed geothermal power generating capacity in the world is approximately 9000 MWe from[...]
Open Access, Property Rights, and Harvesting Behavior
March 17th, 2016
The natural growth of the forest stock provides part of the story in characterizing the evolution of[...]
Other Growth Functions
March 17th, 2016
The logistic growth function is no doubt far from being a perfect approximation to the growth of the[...]
The Silencer
March 16th, 2016
A geothermal silencer is like a separator operating at atmospheric pressure. It is normally connecte[...]
The Flasher/Separator
March 16th, 2016
Although sometimes a flasher is differentiated from a separator, the two are the same pressure vesse[...]
Logistic Growth
March 16th, 2016
The starting point for describing the evolution of a renewable resource stock is the logistic growth[...]
Problems Regarding Polymeric Collectors
These tests and computations may not reflect the requirements for polymeric (and other) collectors if they have measures to limit the temperature of the absorber.
18.6.2.1 The Limit is Dependent Mainly on the Absorber Temperature
This limiting behavior will arise, for example, in the case of an adequate thermotropic layer that is mounted on the absorber or in the case of ventilation or other limiting cooling measures that are controlled mainly by the absorber temperature.
If the temperature limit is mainly dependent on the absorber temperature then the efficiency curve will more or less abruptly fall to zero at this temperature. This limiting behavior and therefore the area of validity of the formulas (7), (8), (32), (32.1), (D.3), (D.4), (H.1) and (H.2) cannot be expressed as a function of (tm — ta).
Such an efficiency curve can no longer be modeled with a second-order function as a whole. Below this limiting temperature – approximately represented as a limit in tm instead of a limit in the absorber temperature – all the above-mentioned formulas will work correctly with the exception of (C.1), where this simple linear correlation will no longer hold.
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