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The NatVent
The Source Book (1...)
products
PUBLICATIONS
Natural ventilation for offices
The Source Book The demand for natural ventilation is
Monitoring Reports growing day by day. Natural ventilation can
The Summary
be suitable for up to 80% of office-type
Reports buildings in the UK and continental Europe.
The Detailed
Reports
Of course no two buildings are the same,
and there are a number of perceived
DESIGN TOOLS barriers to natural ventilation which
The NatVent designers, developers and building owners
program need to overcome.
The NiteCool
program
This new Guide provides answers to these
The NavIAQ issues. It will help you to:
program
select the right solution for a building
Design tool for
night cooling inlets be confidant that your strategy will work
sell the concept to colleagues and
Design tool for
urban air inlets clients
NatVent
The NatVent
The Source Book (2|)
products
PUBLICATIONS
Natural ventilation for offices
The Source Book
Monitoring Reports Contents Putting it all together
The Summary the site and the building
Reports
Why natural ventilation? new buildings and retrofit
The Detailed
Reports
the background hardware
the benefits commissioning
Hot weather and natural ventilation Looking to the future
DESIGN TOOLS
cooling by design pollution control
The NatVent
program is pollution a problem?
what about older buildings
The NiteCool
program Ventilation in winter
indoor air quality For more information contact
The NavIAQ
program ventilation strategies Jane Butcher at BRE
heat recovery……. Tel: +44 (0)1923 664877
Design tool for
night cooling inlets
Fax: +44 (0)1923 664796
Design tool for
urban air inlets
NatVent
The NatVent
Monitoring reports (1...)
products
The summary reports
PUBLICATIONS
The Source Book In the framework of Work Package 2 of the
Monitoring Reports NatVent project, 19 naturally ventilated buildings
The Summary were monitored in summer and winter.
Reports
For each building, the results of the monitoring
The Detailed campaigns are reported in two reports:
Reports
a summary report
a detailed report
DESIGN TOOLS
The NatVent
program The 4 pages summary folders contain
The NiteCool a description of the building
program
a description of the ventilation system and the
The NavIAQ ventilation technology
program
a short presentation of some monitoring results
Design tool for
night cooling inlets conclusions, improvements &
recommendations
Design tool for
urban air inlets
NatVent
The NatVent
Monitoring reports (2|)
products
The summary reports
PUBLICATIONS
The Source Book You can find the PDF-files of the
Monitoring Reports summary reports of the 19 buildings in the
The Summary directory \Reports \Monitoring Reports
Reports \Summary Reports on this CD-R.
The Detailed
Reports
DESIGN TOOLS
The NatVent
program
The NiteCool
program
You can read and print pdf-files with the Acrobat® Reader
The NavIAQ ®3.0. Program. This program is free.
program Download it from the Acrobat web site: www.adobe.com OR
run the installation file ar32e301(1).exe in the directory
Design tool for \Installation
night cooling inlets
Design tool for
urban air inlets
NatVent
The NatVent
Monitoring reports (1...)
products
The detailed reports
PUBLICATIONS
The Source Book In the framework of Work Package 2 of the
Monitoring Reports NatVent project, 19 naturally ventilated
The Summary buildings were monitored in summer and
Reports winter.
The Detailed For each building, the results of the
Reports monitoring campaigns are reported in two
reports:
DESIGN TOOLS a summary report
The NatVent
a detailed report
program
The NiteCool
program The detailed reports contains all information
The NavIAQ
of the monitoring campaigns:
program description of set-up of the monitoring
Design tool for equipment, monitoring periods, several
night cooling inlets charts with monitoring results, detailed
Design tool for
analysis of the results, etc.
urban air inlets
NatVent
The NatVent
Monitoring reports (2|)
products
The detailed reports
PUBLICATIONS
The Source Book For each building, you can find the PDF-files of the detailed report in the
Monitoring Reports directory \Reports \Monitoring Reports \Summary Reports.
The Summary
Reports
This directory contains also the Final Monitoring Report (final monitoring
The Detailed
Reports
report.pdf). This documents contains
a description of the monitoring protocol that was used in all monitoring
DESIGN TOOLS campaigns
8 key-messages and conclusions
The NatVent
program
The NiteCool
program
You can read and print pdf-files with the Acrobat® Reader
The NavIAQ ®3.0. Program. This program is free.
program Download it from the Acrobat web site: www.adobe.com OR
run the installation file ar32e301(1).exe in the directory
Design tool for \Installation
night cooling inlets
Design tool for
urban air inlets
NatVent
The NatVent
products
The NatVent program (1...)
PUBLICATIONS
The Source Book The NatVent program was developed within the NatVent project
Monitoring Reports
as a pre-design tool for natural ventilation.
The Summary
Reports The NatVent program calculates the indoor air temperature and
The Detailed the ventilation rate in a building.
Reports
One of the key issues is to enable the use of the program early
in the design process. Therefore the program uses input that is
DESIGN TOOLS easy to quantify, even at an early stage in the design process.
The NatVent
When a calculation is made, the program draws graphs of the
program
indoor air temperature and the ventilation rate.
The NiteCool
program
The program uses a single-zone model coupling an air flow
algorithm with a thermal algorithm.
The NavIAQ
program The program is designed to be used by architects and
engineers.
Design tool for
night cooling inlets
Design tool for
urban air inlets
NatVent
The NatVent
products
The NatVent program (2...)
PUBLICATIONS
The Source Book
Monitoring Reports
The Summary
Reports
The Detailed
Reports
DESIGN TOOLS
The NatVent
program
The NiteCool
program
The NavIAQ
program
Design tool for
night cooling inlets
The
Design tool for interface
urban air inlets
NatVent
The NatVent
products
The NatVent program (3|)
PUBLICATIONS
The Source Book The NatVent program was developed within the NatVent project as a pre-
design tool for natural ventilation. It is a free-ware distributed on this CD-R.
Monitoring Reports
The Summary
Reports
You can find all files of the NatVent program in the directory
The Detailed
Reports \Design Tools\The NatVent program:
\Guide & fundamentals: pdf-files of the User’s Guide and the
DESIGN TOOLS Fundamentals.
The NatVent \Installation files: run Setup.exe to install the NatVent program
program
\Weather files: place the weather files in a directory called \Weather
The NiteCool in the NatVent directory
program
The NavIAQ
program You can read and print pdf-files with the Acrobat® Reader
®3.0. Program. This program is free.
Design tool for Download it from the Acrobat web site: www.adobe.com OR
night cooling inlets run the installation file ar32e301(1).exe in the directory
\Installation
Design tool for
urban air inlets
NatVent
The NatVent
products
The NiteCool program (1...) logo
PUBLICATIONS
Pre-design software tool for
The Source Book
architects and designers
Monitoring Reports
quick and easy to use
The Summary
Reports
The Detailed NiteCool
Reports investigates variations in
– internal heat gains
DESIGN TOOLS – ventilation rates
The NatVent – occupancy patterns
program – external temperatures
The NiteCool compares energy consumption and comfort benchmarks…..
program features mechanical systems, natural ventilation and active cooling systems
The NavIAQ adjusts design parameters to meet comfort/energy consumption criteria….
program studies different weather scenarios
Design tool for results and parametric analysis displayed in graph form
night cooling inlets
Design tool for
urban air inlets
NatVent
The NatVent
products
The NiteCool program (2...) logo
PUBLICATIONS
The Source Book
Monitoring Reports
The Summary
Reports
The Detailed
Reports
DESIGN TOOLS
The NatVent
program
The NiteCool
program
The NavIAQ
program
Design tool for
night cooling inlets
Design tool for
The
urban air inlets interface
NatVent
The NatVent
products
The NiteCool program (3|) logo
PUBLICATIONS NiteCool enables the user to
The Source Book investigate the feasibility of using natural ventilation to improve summer comfort
levels
Monitoring Reports
assess a range of night cooling strategies…
The Summary
Reports select a cooling strategy early in the design stage
The Detailed make informed decisions on the construction, opening configuration and
Reports operation of a building…..
DESIGN TOOLS
The NatVent
For more information contact Jane Butcher at BRE
program Tel: +44 (0)1923 664877
The NiteCool
Fax: +44 (0)1923 664796
program
The NavIAQ
program You can find all files of the NatVent program in the directory
\Design Tools\NiteCool:
Design tool for
night cooling inlets \Guide & fundamentals: to add (BRE) !!
\Installation files: run Setup.exe to install the NiteCool program
Design tool for
urban air inlets
NatVent
The NatVent
products
The NavIAQ program (1...)
PUBLICATIONS
The Source Book
NaVIAQ simulates
Monitoring Reports ventilation flow rates and CO2 concentrations
The Summary
Reports in a floor of an office building .
The Detailed
Reports Applications:
test of ventilation strategies
DESIGN TOOLS sizing of ventilation openings
The NatVent proving the system performance
program
check a pressure hierarchy
The NiteCool
program effect of air tightness of the building
envelope
The NavIAQ
program effect of wind direction and wind speed
spread of pollutants (CO2 exhaled by
Design tool for
night cooling inlets inhabitants)
Design tool for time aspect of IAQ
urban air inlets …..
NatVent
The NatVent
products
The NavIAQ program (2...)
PUBLICATIONS
The Source Book
Monitoring Reports
The Summary
Reports
The Detailed
Reports
DESIGN TOOLS
The NatVent
program
The NiteCool
program
The NavIAQ
program
Design tool for
night cooling inlets
Design tool for
The input
urban air inlets window
NatVent
The NatVent
products
The NavIAQ program (3|)
PUBLICATIONS
NaVIAQ input: NaVIAQ output:
The Source Book
window and door positions pressure differences
Monitoring Reports ventilation openings ventilation flow rates
The Summary self regulating openings air change rates
Reports
mechanical flow rates the course of CO2
The Detailed
Reports
meteo wind and temperature ventilation energy loss
number of persons per room
different settings for other
DESIGN TOOLS
rooms
The NatVent
program
The NiteCool You can find all files of the Nat program in the directory
program
\Design Tools\NavIAQ:
The NavIAQ
program
\User’s Guide: NaVIAQ Manual.pdf. You can read and print this
reports with the Acrobat® Reader ®3.0. Program.
Design tool for (www.adobe.com)
night cooling inlets
\Installation files: run Setup.exe to install the NavIAQ program
Design tool for
urban air inlets
NatVent
The NatVent
Graphical design tool for sizing
products
PUBLICATIONS
night cooling openings (1...)
The Source Book A set of simple design equations is derived from a large series of
Monitoring Reports simulation runs. The indoor temperatures of an office during the Dutch
The Summary
reference year is calculated for all kind of buildings, internal heat gains and
Reports ventilation system designs.
The Detailed
Reports
From these data series the dimensions of the effective opening for
night ventilation is derived as a function of internal heat gain, solar
DESIGN TOOLS protection system, mass of the building, control strategy and type of
The NatVent ventilation (single sided, cross, and fan assisted systems). These
program
equations are used to construct the Graphical Design Tool (see figure on
The NiteCool next slide).
program
The NavIAQ
program
Design tool for
night cooling inlets
Design tool for
urban air inlets
NatVent
The NatVent
Graphical design tool for sizing
products
PUBLICATIONS
night cooling openings (2|)
Selection Natural Ventilation Cooling System
The Source Book The Graphical Design Tool and the
user’s instructions are given in the
Internal Heat/Load W/m²
Monitoring Reports low 20
25
20
The Summary document 3.4_night cooling.pdf. middle
30
35 Ventilation System
40 Natural Single Cross Chimney
Reports high 45 System Sided + fan **
50 Effective
opening 1 2 3 1 2 3 1 2 3
The Detailed in % floor
You can find this document in the Vent. rate
- - - - - - 2 2 2
Reports Solar gain W/m² fan [ach]
directory sun window %
20
N/S
15
W/E
17
20
25 27 28
30 32
40 30 34 34
DESIGN TOOLS \Reports\Technological 60
20
46
5
51
7 +
35
40
45
39
not acceptable 44
38
42
40 10 14
solutions 60
40
15
20
21
28
32
50
The NatVent
program Accumulation mass
Type * Ceiling Points
Heavy open -7
The NiteCool M = 100
closed -5
program You can read and print pdf-files with the Medium open 0
+
M = 75
closed +6
Acrobat® Reader ®3.0. Program. This Light 32
End result
The NavIAQ M = 50 +8 dimensions of
program is free. vent openings
program (effective
Download it from the Acrobat web site: Control Strategy Night Cooling Points
opening in
% floor area)
Design tool for www.adobe.com OR run the installation file
No Night Cooling + 10 +
night cooling inlets ar32e301(1).exe in the directory \Installation Predictive Control 0
Manual by Operator + 5
*
Design tool for **
No wind fan on.
M = the sum of half the weight of the side walls,
back wall, floor, ceiling and the entire weight of
urban air inlets the facade divided by the total inner room area.
Weight of a wall should be limited to 400 kg/m .
2
NatVent
Design tool for sizing urban
The NatVent
products
air inlets (1...)
PUBLICATIONS
The Source Book A common barrier when adopting Noise levels at facades, in relation to noise intensity
at road source
Monitoring Reports
natural ventilation in buildings 85
located in urban environments is 80
80 dB at source 75 dB at source
The Summary
Reports the potential exposure to external 70 dB at source
60 dB at source
65 dB at source
75
The Detailed pollutants. Whilst mechanical
Reports ventilation systems can draw air 70
noise level at facade (dB)
through cleaning filters the driving 65
DESIGN TOOLS pressures associated with naturally
The NatVent ventilated buildings are too low. 60
program 55
The NiteCool
program
A strategy suitable for naturally 50
ventilated buildings includes,
45
The NavIAQ
program
identifying sources of pollution
surrounding buildings and 40
0 20 40 60 80 100 120 140 160
Design tool for
night cooling inlets
positioning air inlet devices in a distance from road (m)
sensible way.
Design tool for
urban air inlets
NatVent
Design tool for sizing urban
The NatVent
products
air inlets (2|)
PUBLICATIONS
The Source Book In the framework of Work Package 3.1 an interactive design
tool has been developed.
Monitoring Reports
The Summary
The interactive design tool:
Reports identifies all urban sources of pollution
The Detailed
indicates how different ventilation approaches will
Reports
determine the type of pollution control features required
DESIGN TOOLS
within air inlets
calculates appropriate opening areas.
The NatVent
program
The NiteCool The design tool is based on an Excel sheet. You can find the Excel
program sheet SizeTool_95.xls in the Directory:
The NavIAQ \Design Tools\ Urban Air Inlets
program
Moreover you can use the interactive presentation:
Design tool for go back to the main page and
night cooling inlets
select: Smart Technology Systems Activity 3.1
Design tool for
urban air inlets
NatVent
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