|
Ventilation...
Commercial Ventilation
Commercial Air Management, whether it is heating, cooling or ventilating a room
is about providing a comfortable and healthy working environment for all. Decent
indoor air quality is a critical factor in the successful performance of a
building. This ranges from the control of carbon dioxide levels in a school
classroom, the adequate ventilation of toilet and shower blocks, the cooling of
offices in summer, the efficient heating of meeting rooms in winter and the
management of emissions from specialist areas such as laboratories, fire exits
and industrial kitchens.
Hawkes have years of experience, proving extract, and
ventilation systems to all range of commercial environments. And with clever
design Hawkes are able to provide substantial savings.
Systems such as Mitsubishi
LOSSNAY; Daikin's VAM and Toshiba provide 100% Fresh air whilst transferring
heat over exchangers.
In a rapidly changing marketplace, increasingly heating,
ventilation and air conditioning are seen as a single system with each component
having a profound effect on the performance of the rest, driving the need for a
single air management system.
Simple and Effective
Excellent air quality and unbeatable Heat Exchange Efficiency
 
Poor air quality can
be attributed to many problems arising in the workplace or in the
home. It is believed to contribute to a significant loss in
productivity, low morale and higher rates of sickness amongst many
employees. The object of providing good ventilation alongside air
conditioning in residential and commercial buildings is to provide
conditions under which people can live and work in comfort and
safety.
Developed and refined
over the past 30 years, the Lossnay system has perfected the
recovery of waste energy. The units reduce overall energy costs by
extracting stale air and then recovering the heating or cooling
energy to either warm or cool incoming fresh air. By utilising this
energy, the Lossnay system can save up to 30% on initial capital
costs of heating and cooling plant.
The
Secret of the Lossnay System
The secret of the
Lossnay system lies in the cross flow, plate fin structure of the
heat exchange unit (Lossnay core).
A diaphragm made of
specially processed paper fully separates inlet and exhaust air
supplies, ensuring that only fresh air is introduced to the indoor
environment. The superior heat-transfer and moisture permeability
of the special paper ensures highly efficient total heat exchange
(temperature and humidity) when inlet and exhaust air supplies cross
in the Lossnay element.
Main features of Lossnay
Lossnay’s simultaneous air exhaust/supply provides effective
ventilation. Conventional ventilators (ie. Extract propeller fans)
do not work effectively within air tight buildings because of the
negative air pressures involved.
Total heating (sensible and latent) recovery provides a comfortable
air temperature within the room. The energy saved by using Lossnay
contributes towards lowering the heating or cooling requirement
within the building, therefore reducing the energy requirement and
running costs.
When the outdoor temperature is lower than the indoor air
conditioned temperature in the summer, Lossnay provides fresh
outdoor cool air to reduce the indoor air temperature.
The supply/exhaust balance can be selected to suit the
usage environment and location.
As the Lossnay core is made of paper and the permeable holes are
small, the Lossnay core provides outstanding soundproofing
properties and is appropriate for sound proof rooms.
With the introduction of Part L2 (Part J in Scotland), new building
design is changing to become more airtight, as well as energy
efficient. The need for fresh air has remained the same however and
thus poses new challenges for modern design. Lossnay fully meets
these challenges due to its basic principal and its efficient heat
recovery.
Contents
This system combines the flexibility of Daikin units with air
handling applications.
Find out more
Air conditioning and fresh air treatment can be accomplished
via a single system.
Find out more
The Daikin heat recovery ventilation system modulates the
temperature and humidity of incoming fresh air to match indoor
conditions.
Find out more
Saving Energy
The need to reduce the effects of global warming, secure our energy
supplies for future generations and implement the Kyoto agreement to cut carbon
emissions are all highlighting the requirements for energy efficiency. With
buildings responsible for nearly 50% of the EU CO2 emissions, the industry has
been set a challenge to deliver environmentally friendly' buildings.
Reducing Costs
Rising fuel prices are placing an increasing burden on businesses trying
to remain competitive in a tough global market. Sharper focus is now being
placed on managing energy consumption in a bid to reduce operating costs.
Increasing Productivity
Studies have shown that an improvement in air quality can have a
measurable effect on employee productivity, creating a more comfortable and
motivated workforce. Additionally, in schools a reduction in carbon dioxide
levels will help to create healthier learning environments.
Meeting Legislation
The European Energy Performance of Buildings Directive is being
implemented through changes to Part L and Part F of the Building Regulations
with the aim for air conditioned buildings to reduce carbon emissions by as much
as 28%. The effect is that air management systems must be designed as part of
the overall building management system and not simply individual elements within
a room.
Improving Health
The quality of indoor air can be linked to the feeling of 'Sick Building
Syndrome', to general fatigue, headaches from the lack of fresh air or extended
exposure to pollutants in the atmosphere. This is recognised by the government’s
requirement to raise the fresh air supply from rate 8 l/s per person to 10 l/s
person.
Project Funding
Government investment, particularly in health and education is driving
Private Finance Initiatives (PFI), requiring a consortium to bid for projects to
design, construct and manage buildings for today and the next 20–30 years. This
requires a project based approach to sourcing the supply chain with the emphasis
on whole life costing and maintenance scheduling as well as the initial capital
costs.
|
|
