CN109086559A - The heat transfer coefficient design method of sludge composting workshop building enclosure - Google Patents
The heat transfer coefficient design method of sludge composting workshop building enclosure Download PDFInfo
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- CN109086559A CN109086559A CN201811152966.1A CN201811152966A CN109086559A CN 109086559 A CN109086559 A CN 109086559A CN 201811152966 A CN201811152966 A CN 201811152966A CN 109086559 A CN109086559 A CN 109086559A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of heat transfer coefficient design method of sludge composting workshop building enclosure, 1, according to the production outline of sludge composting factory, determine the production capacity in sludge composting workshop；2, according to sludge composting workshop building site, obtain local annual outdoor temperature by when parameter；3, by local annual outdoor temperature by when parameter input Excel table；4, the heat transfer coefficient that sludge composting workshop enclosed structure is inputted in Excel table calculates mathematical model；5, heap body quantity, day the processing sludge quantity, workshop General Ventilation Rate, heap body ventilation quantity parameter in sludge composting workshop are determined；6, according to heat transfer coefficient calculate mathematical model calculate it is annual by when heat transfer；7, the editting function that maximum value is searched using Excel, finds out the maximum value of heat transfer coefficient；8, judge whether calculated result meets the economy of design requirement, if meeting i.e. output result；Otherwise adjustment workshop General Ventilation Rate recalculates, until meeting the economy of design requirement.
Description
Technical field
The present invention relates to sludge composting workshop Design of Retaining Structure and material to select, and encloses more particularly, to sludge composting workshop
The heat transfer coefficient design method of protection structure.
Background technique
According to the requirement of sludge composting technique, decomposed sludge product moisture content index is≤30%.And initially sludge is aqueous
Generally 80% or so, each fermentation period needs as water vapor to emit moisture a large amount of in heap body rate.Now with
For the sludge composting workshop of day processing 300t, the average daily steam vapour amount that is discharged is up to 150t or so.The water come out from heap body
Steam otherwise by nuisance control ventilating system workshop is discharged in time or condensed into workshop liquid water return workshop and
Heap body causes to seriously affect to compost quality and workshop appliance operation.
In such a way that nuisance controls the vapor discharge workshop that ventilating system comes out heap body, due to sludge
Air temperature control in fertile workshop is influenced by factors such as outdoor air, ventilation quantity, heap body moisture dispersed amounts, and not single increasing is logical
Air quantity can solve.In addition, if blindness stronger ventilation amount, the energy input and operating cost that increase ventilation blower is high.
It is a kind of most straightforward approach that taking, which prevents sludge composting workshop building enclosure inner surface moisture condensation, i.e., in design of workshop
When select suitable enclosure structure heat transfer coefficient so that the temperature of building enclosure inner surface be higher than room air dew-point temperature.
But at present in sludge composting workshop Design of Retaining Structure, the standard and calculation method that not can refer to.Therefore, most
The parameter request that design relies solely on public building energy design standard is designed, and public building design standard is relied on to provide
Parameter be designed the condensation trouble for not being avoided that building enclosure inner surface.
Summary of the invention
On the basis of based on indoor moisture condensation requirement is prevented, a kind of sludge composting workshop building enclosure is provided
Heat transfer coefficient design method.
To achieve the above object, the present invention takes following technical proposals:
The heat transfer coefficient design method of sludge composting workshop of the present invention building enclosure, includes the following steps:
Step 1, according to the production outline of sludge composting factory, determine the production capacity in sludge composting workshop；
Step 2, according to sludge composting workshop building site, obtain local annual outdoor temperature by when parameter；
Step 3, by the local annual outdoor temperature by when parameter input Excel table；
Step 4, the heat transfer coefficient that sludge composting workshop enclosed structure is inputted in the Excel table calculate mathematical model；
Step 5, the heap body quantity for determining sludge composting workshop, day processing sludge quantity, workshop General Ventilation Rate, heap body ventilation quantity ginseng
Number；
Step 6, calculated according to the heat transfer coefficient mathematical model calculate it is annual by when heat transfer；
Step 7, the editting function that maximum value is searched using Excel, find out the maximum value of the heat transfer coefficient；
Step 8 judges whether calculated result meets the economy of design requirement, if meeting i.e. output result；Otherwise described in adjustment
Workshop General Ventilation Rate recalculates, until meeting the economy of design requirement.
The heat transfer coefficient of sludge composting workshop enclosed structure calculates mathematical model are as follows:
In formula:
: ventilation quantity needed for heap body is decomposed, m3/s；
: the area of workshop building enclosure, m2；
: for the dew-point temperature of room air,；
: indicate the coefficient of heat transfer of architectural exterior-protecting construction inner surface, it usually can value 8.7W/ (m2K)；
: the General Ventilation Rate in workshop, m3/ h；
: the different fermentation stage of heap body；
: the mean specific heat of air, (kJ/kg DEG C)；
: the Relative average molecular weight of air, g/mol；
: heap temperature, DEG C；
: workshop room temperature, DEG C；
: outdoor temperature, DEG C；
: steam partial pressure, Pa；
: indoor relative humidity；
: heat exchange coefficient of interior surface, kcal/ (m2h ℃)；
: building enclosure internal surface temperature, DEG C；
: enclosure structure heat transfer coefficient, W/ (m2 K)。
The present invention is based on preventing indoor moisture condensation from proposing computation model on the basis of requiring, by process characteristic, architectural design and
Design of ventilation combines, and calculates and compares by typical case, has preferable engineering application value.Meanwhile calculating of the invention
Method is easy, provides data support for the heat transfer coefficient design of sludge composting workshop building enclosure, is also sludge composting workshop
Design of ventilation provide data foundation, substantially increase sludge composting workshop Design of Retaining Structure accuracy and design effect
Rate.
Detailed description of the invention
Fig. 1 is heat transfer coefficient design method flow diagram of the present invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
State embodiment.
As shown in Figure 1, the heat transfer coefficient design method of sludge composting workshop of the present invention building enclosure, including following steps
It is rapid:
Step 1, according to the production outline of sludge composting factory, determine the production capacity in sludge composting workshop；
Step 2, according to sludge composting workshop building site, obtain local annual outdoor temperature by when parameter；
Step 3, by the local annual outdoor temperature by when parameter input Excel table；
Step 4, the heat transfer coefficient that sludge composting workshop enclosed structure is inputted in the Excel table calculate mathematical model；
Step 5, the heap body quantity for determining sludge composting workshop, day processing sludge quantity, workshop General Ventilation Rate, heap body ventilation quantity ginseng
Number；
Step 6, calculated according to the heat transfer coefficient mathematical model calculate it is annual by when heat transfer；
Step 7, the editting function that maximum value is searched using Excel, find out the maximum value of the heat transfer coefficient；
Step 8 judges whether calculated result meets the economy of design requirement, if meeting i.e. output result；Otherwise described in adjustment
Workshop General Ventilation Rate recalculates, until meeting the economy of design requirement.
The heat transfer coefficient of sludge composting workshop enclosed structure calculates mathematical model are as follows:
: ventilation quantity needed for heap body is decomposed, m3/s；
: the area of workshop building enclosure, m2；
: for the dew-point temperature of room air,；
: indicate the coefficient of heat transfer of architectural exterior-protecting construction inner surface, it usually can value 8.7W/ (m2K)；
: the General Ventilation Rate in workshop, m3/ h；
: the different fermentation stage of heap body；
: the mean specific heat of air, (kJ/kg DEG C)；
: the Relative average molecular weight of air, g/mol；
: heap temperature, DEG C；
: workshop room temperature, DEG C；
: outdoor temperature, DEG C；
: steam partial pressure, Pa；
: indoor relative humidity；
: heat exchange coefficient of interior surface, kcal/ (m2h ℃)；
: building enclosure internal surface temperature, DEG C；
: enclosure structure heat transfer coefficient, W/ (m2 K)。
Claims (2)
1. a kind of heat transfer coefficient design method of sludge composting workshop building enclosure, it is characterised in that: include the following steps:
Step 1, according to the production outline of sludge composting factory, determine the production capacity in sludge composting workshop；
Step 2, according to sludge composting workshop building site, obtain local annual outdoor temperature by when parameter；
Step 3, by the local annual outdoor temperature by when parameter input Excel table；
Step 4, the heat transfer coefficient that sludge composting workshop enclosed structure is inputted in the Excel table calculate mathematical model；
Step 5, the heap body quantity for determining sludge composting workshop, day processing sludge quantity, workshop General Ventilation Rate, heap body ventilation quantity ginseng
Number；
Step 6, calculated according to the heat transfer coefficient mathematical model calculate it is annual by when heat transfer；
Step 7, the editting function that maximum value is searched using Excel, find out the maximum value of the heat transfer coefficient；
Step 8 judges whether calculated result meets the economy of design requirement, if meeting i.e. output result；Otherwise described in adjustment
Workshop General Ventilation Rate recalculates, until meeting the economy of design requirement.
2. the heat transfer coefficient design method of sludge composting workshop building enclosure according to claim 1, it is characterised in that: described
The heat transfer coefficient of sludge composting workshop enclosed structure calculates mathematical model are as follows:
In formula:
: ventilation quantity needed for heap body is decomposed, m3/s；
: the area of workshop building enclosure, m2；
: for the dew-point temperature of room air,；
: indicate the coefficient of heat transfer of architectural exterior-protecting construction inner surface, it usually can value 8.7W/ (m2K)；
: the General Ventilation Rate in workshop, m3/ h；
: the different fermentation stage of heap body；
: the mean specific heat of air, (kJ/kg DEG C)；
: the Relative average molecular weight of air, g/mol；
: heap temperature, DEG C；
: workshop room temperature, DEG C；
: outdoor temperature, DEG C；
: steam partial pressure, Pa；
: indoor relative humidity；
: heat exchange coefficient of interior surface, kcal/ (m2h℃)；
: building enclosure internal surface temperature, DEG C；
: enclosure structure heat transfer coefficient, W/ (m2K)。
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| CN201811152966.1A CN109086559B (en) | 2018-09-30 | 2018-09-30 | Heat transfer coefficient design method for sludge composting workshop enclosure structure |
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|---|---|---|---|
| CN201811152966.1A CN109086559B (en) | 2018-09-30 | 2018-09-30 | Heat transfer coefficient design method for sludge composting workshop enclosure structure |
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| CN109086559A true CN109086559A (en) | 2018-12-25 |
| CN109086559B CN109086559B (en) | 2023-03-24 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024080A (en) * | 2010-12-01 | 2011-04-20 | 西安建筑科技大学 | Simplified calculation method for designing night ventilation and cooling of buildings |
| RU2475729C1 (en) * | 2011-09-13 | 2013-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Брянская государственная инженерно-технологическая академия" | Heat-engineering investigation method of buildings and facilities |
| CN104680004A (en) * | 2015-02-11 | 2015-06-03 | 西安建筑科技大学 | Building energy-saving rate calculation method |
-
2018
- 2018-09-30 CN CN201811152966.1A patent/CN109086559B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024080A (en) * | 2010-12-01 | 2011-04-20 | 西安建筑科技大学 | Simplified calculation method for designing night ventilation and cooling of buildings |
| RU2475729C1 (en) * | 2011-09-13 | 2013-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Брянская государственная инженерно-технологическая академия" | Heat-engineering investigation method of buildings and facilities |
| CN104680004A (en) * | 2015-02-11 | 2015-06-03 | 西安建筑科技大学 | Building energy-saving rate calculation method |
Non-Patent Citations (1)
| Title |
|---|
| 宋高举等: "污泥堆肥车间全面通风量影响因素分析", 《暖通空调》 * |
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| CN109086559B (en) | 2023-03-24 |
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