Thermal power plant: loss attribution?
…heat. The recapture of waste heat is the largest determinant of the efficiency of a thermal power plant. Our base case model assumes that 50% of the low-pressure steam heat…
Thermodynamics of CO2 at different temperatures and pressures?
…Cp fluctuating wildly at low-intermediate temperatures. This has a strange result for heating CO2 in a heat exchanger. As energy is transferred from a hot CO2 stream to a cold…
Adiabatic flame temperature: hydrogen, methane and oil products?
…flame, because no heat is dissipated unnecessarily in heating up superfluous oxygen. The data-file shows that at an idealized, 100% stoichiometric ratio, the adiabatic flame temperature for natural gas is…
Global energy demand by end use?
…transportation, heat, electricity, materials and manufacturing. Numbers, calculations, efficiencies and heating temperatures are in the data-file. $799.00 – Purchase Checkout Added to cart Primary global energy demand runs at 160,000 TWH pa….
Maxwell’s demon: computation is energy?
…to be transferred. You see this in the charts below, which plots the PV-TS plot for a Brayton cycle heat engine that harnesses net work via moving heat from a…
LNG liquefaction technologies: an overview?
…heat exchangers, which can be more efficient but more expensive than plate fin heat exchangers. Our model assumes 87% net efficiency transferring coldness from the refrigerant into the LNG stream….
Thermodynamics: Carnot, Rankine, Brayton & beyond?
Engines convert heat into work. They are governed by thermodynamics. This note is not a 1,000 page textbook. The goal is to explain different thermodynamic cycles and heat engines, simply,…
Organic Rankine Cycles: the energy economics?
…electricity. The working fluid is usually water, which boils into steam at 100ºC, and then is super-heated to 300-500ºC. Organic Rankine Cycles aim to harness mechanical energy from lower-temperature heat…
Thermal energy storage: leading companies?
This data-file is a screen of thermal energy storage companies, developing systems that can absorb excess renewable electricity, heat up a storage medium, and then re-release the heat later, for…
Industrial cooling: chillers and evaporators?
This data-file captures the costs of industrial cooling, especially liquid cooling using commercial HVAC equipment, across heat-exchangers, cooling tower evaporators and chillers. Our base case is that removing 100MW-th of…