To narrow down the search results, you can refine your query by specifying the fields to search for. The list of fields is presented above. For example:
You can search in several fields at the same time:
Logical operators
The default operator is AND.
Operator AND means that the document must match all elements in the group:
research development
Operator OR means that the document must match one of the values in the group:
study OR development
Operator NOT excludes documents containing this element:
study NOT development
Search type
When writing a query, you can specify the method in which the phrase will be searched. Four methods are supported: search taking into account morphology, without morphology, prefix search, phrase search.
By default, the search is performed taking into account morphology.
To search without morphology, just put a “dollar” sign in front of the words in the phrase:
$ study $ development
To search for a prefix, you need to put an asterisk after the query:
study *
To search for a phrase, you need to enclose the query in double quotes:
" research and development "
Search by synonyms
To include synonyms of a word in the search results, you need to put a hash " #
" before a word or before an expression in parentheses.
When applied to one word, up to three synonyms will be found for it.
When applied to a parenthetical expression, a synonym will be added to each word if one was found.
Not compatible with morphology-free search, prefix search, or phrase search.
# study
Grouping
In order to group search phrases you need to use brackets. This allows you to control the Boolean logic of the request.
For example, you need to make a request: find documents whose author is Ivanov or Petrov, and the title contains the words research or development:
Approximate word search
For approximate search you need to put a tilde " ~ " at the end of a word from a phrase. For example:
bromine ~
When searching, words such as "bromine", "rum", "industrial", etc. will be found.
You can additionally specify the maximum number of possible edits: 0, 1 or 2. For example:
bromine ~1
By default, 2 edits are allowed.
Proximity criterion
To search by proximity criterion, you need to put a tilde " ~ " at the end of the phrase. For example, to find documents with the words research and development within 2 words, use the following query:
" research development "~2
Relevance of expressions
To change the relevance of individual expressions in the search, use the " sign ^
" at the end of the expression, followed by the level of relevance of this expression in relation to the others.
The higher the level, the more relevant the expression is.
For example, in this expression, the word “research” is four times more relevant than the word “development”:
study ^4 development
By default, the level is 1. Valid values are a positive real number.
Search within an interval
To indicate the interval in which the value of a field should be located, you should indicate the boundary values in parentheses, separated by the operator TO.
Lexicographic sorting will be performed.
Such a query will return results with an author starting from Ivanov and ending with Petrov, but Ivanov and Petrov will not be included in the result.
To include a value in a range, use square brackets. To exclude a value, use curly braces.
] Textbook for universities. 2nd edition, corrected and expanded. Authors: Lev Samoilovich Sterman, Semyon Abramovich Tevlin, Alexander Timofeevich Sharkov. Edited by L.S. Sterman.
(Moscow: Energoizdat, 1982)
Scan, processing, Djv format: Oleg-1955, 2017
- BRIEF CONTENTS:
Preface (5).
List of accepted notations (6).
Chapter 1. Power plants and their purpose. Combined and separate generation of electrical and thermal energy (8).
Chapter 2. Steam turbine schemes power plants power plants (17).
Chapter 3. Indicators of thermal and general efficiency of power plants (26).
Chapter 4. Parameters of the steam cycle of power plants. Influence of parameters on the thermal efficiency of the installation (42).
Chapter 5. Regenerative heating of feedwater in thermal and nuclear power plants (64).
Chapter 6. Determination of energy indicators of steam turbine installations of power plants (81).
Chapter 7. Heat supply from the power plant to the thermal consumer (92).
Chapter 8. Material balance of the coolant and working fluid at the power plant (110).
Chapter 9. Elements of basic thermal diagrams of power plants (129).
Chapter 10. Principal thermal diagrams of a power plant using organic and nuclear fuel (178).
Chapter 11. Operating modes and energy characteristics main equipment of power plants (202).
Chapter 12. Selection of power plant equipment (219).
Chapter 13. Detailed thermal diagrams of power plants (240).
Chapter 14. Pipelines and fittings of power plants (260).
Chapter 15. Layout of the main power plant building (281).
Chapter 16. Technical water supply of power plants (312).
Chapter 17. Fuel economy of power plants (331).
Chapter 18. Gas purification and ash removal at power plants (346).
Chapter 19. Deposits on the internal surfaces of thermal power equipment of power plants and methods for their removal (369).
Chapter 20. Selection of sites for the construction of power plants. Master plan Thermal power plants and nuclear power plants (388).
Chapter 21. Operation of power plants (400).
Chapter 22. Technical and economic indicators of the operation of thermal and nuclear power plants (415).
Chapter 23. Impact of power plant operation on environment. Safe work power plants (423).
Chapter 24. Gas turbine and combined cycle power plants. Power plants with MHD installations (435).
References (447).
Alphabetical subject index (451).
Publisher's abstract: The fundamentals of the theory of thermal and nuclear power plants are outlined. Issues of operation, methods for determining technical and economic indicators and conditions that ensure the greatest thermal and overall efficiency of the station are considered.
For students of energy universities and faculties. Can also be used by engineers involved in the design and operation of thermal and nuclear power plants.