An appropriate turbocompressor for driving domestic heat pumps with a high temperature lift requires the ability to operate on a wide range of pressure ratios and mass flows, confronting the designer with the necessity of a compromise between range and efficiency.
In the same time, the way to consider our welfare state changed into an overwhelming necessity of cost-efficiency, of evidence based knowledge and costs, regarded as new and compulsory rules.
But also on the scale of house owners and real estate tenants the economic necessity of energy-efficiency is becoming more and more evident.
The paper industry is facing the necessity of improving process efficiency, especially in terms of energy and raw materials consumption.
Future energy perspectives present diffused uncertainness related to the high volatility of energy prices, the lack of global agreement on climate change mitigation, the necessary demand for new energy infrastructures, too slow development of Carbon capture technologies, and the necessity of increasing energy efficiency.
Finally, a comprehensive simulation study involving two examples and a practical application are given to demonstrate the necessity and efficiency of the proposed model.
Solar control coatings are a technology of growing interest due to the necessity of improving the energy efficiency of buildings, with a view to avoiding excessive energy consumption due to cooling systems during summer.
Given the necessity of making tradeoffs among operational efficiency, short- and long-term economic efficiency, independence, profit incentives, and market power, FERC and industry participants should remain flexible, accept regional differences in ITP structure and design, and focus on progress rather than perfection.
It's a matter of efficiency and fairness, of necessity and competitiveness.
The time-sensitive nature and frequently the suboptimal conduct of decision-making in the ICU highlight the necessity of tools to improve the efficiency and quality of the shared decision-making process [2,6,17].
