Solar Total Energy System Test Facility operational phase test plan

In the smart grid context, the article combines SEGS-VI solar thermal power station parameters to establish a solar thermal power generation system model. The thesis is based on the First and Second laws of thermodynamics. It uses the white box model analysis method of the energy system to calculate the solar thermal power generation system-concentrating and collecting subsystem, heat exchange subsystem, and power subsystem to obtain the subsystems dissipation of each process. Finally, the article uses the white box model analysis of the total energy system to treat the subsystems as white boxes, and connects them to form a white box network, makes a reasonable evaluation of the energy consumption status of the total energy system, and finds the weak links in the energy use process of the system. Provide a basis for system energy saving.

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End Use Space Conditioning Equipment Cost Data for Use in Total Energy System Analysis.

10.21236/ada042851 ◽

1977 ◽

Author(s):

Steven B. Goldman ◽

Frederick R. Best ◽

Michael W. Golay

Keyword(s):

Total Energy ◽

System Analysis ◽

Energy System ◽

Cost Data ◽

Equipment Cost ◽

Energy System Analysis ◽

Conditioning Equipment ◽

End Use

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Development of a Multi-Loop Flow and Heat Transfer Facility for Advanced Nuclear Reactor Thermal Hydraulic and Hybrid Energy System Studies

Volume 8A: Heat Transfer and Thermal Engineering ◽

10.1115/imece2014-39057 ◽

2014 ◽

Author(s):

James E. O’Brien ◽

Piyush Sabharwall ◽

SuJong Yoon

Keyword(s):

High Temperature ◽

Nuclear Reactor ◽

National Laboratory ◽

Energy System ◽

Operating Conditions ◽

Test Facility ◽

Flow Loop ◽

Hybrid Energy ◽

Conceptual Design Phase ◽

Intermediate Heat Exchanger

A new high-temperature multi-fluid, multi-loop test facility for advanced nuclear applications is under development at the Idaho National Laboratory. The facility will include three flow loops: high-temperature helium, molten salt, and steam/water. Molten salts have been identified as excellent candidate heat transport fluids for primary or secondary coolant loops, supporting advanced high temperature and small modular reactors (SMRs). Details of some of the design aspects and challenges of this facility, which is currently in the conceptual design phase, are discussed. A preliminary design configuration will be presented, with the required characteristics of the various components. The loop will utilize advanced high-temperature compact printed-circuit heat exchangers (PCHEs) operating at prototypic intermediate heat exchanger (IHX) conditions. The initial configuration will include a high-temperature (750°C), high-pressure (7 MPa) helium loop thermally integrated with a molten fluoride salt (KF-ZrF4) flow loop operating at low pressure (0.2 MPa) at a temperature of ∼450°C. Experiment design challenges include identification of suitable materials and components that will withstand the required loop operating conditions. Corrosion and high temperature creep behavior are major considerations. The facility will include a thermal energy storage capability designed to support scaled process heat delivery for a variety of hybrid energy systems and grid stabilization strategies. Experimental results obtained from this research will also provide important data for code verification and validation (V&V) related to these systems.

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A Theoretical Study on Decentralized Space Heating System

Journal of Energy Resources Technology ◽

10.1115/1.2955479 ◽

2008 ◽

Vol 130 (3) ◽

Cited By ~ 6

Author(s):

Zhi-Ping Song

Keyword(s):

Energy Conservation ◽

Total Energy ◽

Global Climate ◽

Energy System ◽

Specific Consumption ◽

Space Heating ◽

Full Potential ◽

Heating Systems ◽

End Use ◽

The Impact

Global climate change mitigation requires the fossil fuel consumption substantially reduced. Space heating is an energy-consuming sector. Despite the fact that the thermal efficiency of current space heating systems has achieved a value higher than 85%, corresponding to lower than 40kg c.e./GJ, there is still a big potential for energy conservation. In order to realize the full potential, investigations of heating systems should appeal to reversibility/exergy analysis made on total energy concept basis. This paper starts with an introduction of the concept “reversible mode of heating,” leading the readers think of space heating in terms of reversibility. Right after, a systematic reversibility analysis on a “mine to home” basis is conducted to reveal the impact of any irreversibility of all subsystems or devices involved in the total energy system of heating on the fuel/monetary specific consumption of unit end-use heat. The paper points out that although combined heat and power (CHP) and electrically driven heat pump are both of “reversible mode,” the former is far more favorable in terms of energy conservation. The recently ascent decentralized energy system provides the best circumstances for CHP implementation. The demand-side improvement is a topic of most importance but frequently neglected. This study reveals that, if properly engineered, this improvement together with adopting a direct type of heat grid might lower the fuel specific consumption of end-use heat of CHP to a level as low as 13–9kg c.e./GJ.

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