Lauer Ventilation UG

blower + motor + frequency converter + control + the right equipment = efficiency

It gives many ways of saving energy and hence to save money while helping nature.

However, it is not only energy saving. It is also an optimization of the production.

 

By frequency control with frequency inverter, through the use of diffusers, by controlling the flow rate via temperature control   ...........

 

To speed regulation with frequency converter

1.    Only as much volume flow as necessary“ consumption to need

What does this mean? The pipe system has a resistance. The air required to do work. We need an air volume X and only an required pressure Y for transport.

 

2. Linear characteristic of regulation

In the Throttle-Regulation interacts the stepping controller and the fan in the system, which without the necessary flow rate is accurately reached In the speed regulation the flow rate changes it linear for the speed change of the fan.

 

3.   Noiseless run

The Speed regulated fan is 9 to 13 dB (A) more quietly than the Throttle or Spin regulated fan.

 

4.   Perfect starting

The minimized starting current makes possible smaller components, like main switches, cable diameters and thus on a long-time basis substantial saving cost.

 

5.   Mechanical quiet running

With spin and throttle-regulated fans in the partial load range with full speed comes it to pressure fluctuations and vibration stimulations, which load rotor, housing and rule organs in the long run. Speed adjusted fans run more calmly and wear less fast.

                       

Energy savings by using a LV-diffuser 

A diffuser basically represents the reversal of a nozzle. It is used to "recovery" of kinetic energy. So diffusers technically be used to change kinetic energy into pressure energy (static pressure). It must be delayed flow. This can be achieved generally by a continuous extension of the flow cross-section, which can be realized geometrically in different ways.  

There are examples of machine cooling where saved by using an LV diffuser 10 to 15 kW engine power at the same cooling intensity on the machine. 

 

Airflow control as a function of temperature:

What types of air volume controls are there?

In principle, there are two methods to control the air flow:

1. Flow control 

2. Pressure Control 

 

A detailed description of these regulations can be receive in a direct conversation.

We want to show you in this little table, what effect the temperature has on the energy consumption!

 

                                   

 






TURBO-BLOWER

KXE112-080030-00   (20°C;0m)

per machine

  

  

Static pressure on machine/fan

  

shaft power

  

  

Impeller speed

  

  

suction   temperature

43.200Nm³

Pressure const.

Air flow = according to the suction temperature

  



Bm³/h

  

 

  



Pa

  
  



kW

  
  



rpm / kW at 50Hz

  
  



°C

  

with diffuser

1.250/1.000/630x500

40.063

10.000/10.900

151

2.701 / 205

-20

with diffuser

1.250/1.000/ 630x500

41.615

10.000/10.900

157

2.766 / 198

-10

with diffuser

1.250/1.000/ 630x500

43.198

10.000/10.900

163

2.831 / 192

0

with diffuser

1.250/1.000/ 630x500

44.780

10.000/10.900

170

2.895 / 187

10

with diffuser

1.250/1.000/ 630x500

46.363

10.000/10.900

176

2.959 / 177

20


BENEFITS OF MODULAR COOLING SYSTEM

Modular Cooling has been devised by LAUER VENTILATION and partners and discussed at the exhibition in Düsseldorf from the world largest of glass manufacturers with biggest interest. The brochures was high demand and out of print.

This now patented modular cooling in the furnace (container glass and float glass) as well as cooling bath bottom will be the new best technical standard of the future!

 

BENEFITS OF MODULAR COOLING: 

- We don't need a concrete channel or large main channels of sheet steel >> with this results: 

# Halving energy costs 

# Reduction of investment costs

# Temperature Controllability of the modules

# Minimum cost of spare parts (back wall of the fans     can be completely replaced with impeller and motor   within a few minutes)  

# Halved the transport cost (on steel channel)

# Is tested at Guardian Glass in Rostov successfully 

# Reduction of CO2

 

Small example:

(Flatglass factory with 700t/day + 400m² tin bath in Europe)

 

Thin bath Cooling

Actual state (conventional cooling system):

TOTAL MOTOR POWER: 160 kW

Energy consumption/ 20 years furnace trip:                                ~ 28.032.000 kWh

with our cooling system (modular cooling system)

TOTAL MOTOR POWER: 70 kW

Energy consumption/ 20 years furnace trip:                                ~ 12.264.000 kWh

ENERGY SAVING:  ~ 15.768.000 kWh

 

 

Furnace Cooling:

Actual state (conventional cooling system):

TOTAL MOTOR POWER: 260 kW

Energy consumption/ 20 years furnace trip:                   45.552.000 kWh

with our cooling system (modular cooling system)

TOTAL MOTOR POWER: 159 kW

Energy consumption/ 20 years furnace trip:                       ~ 27.856.800 kWh 

ENERGY SAVING: 17.695.200 kWh

 

TOTAL ENERGY SAVING (Furnace Cooling + Bath Bottom Cooling): 

         ~ 33.463.200 kWh 


 ENERGY SAVING at Electricity Price of 12 cents / kWh        ~ 4.015.584 EURO 

BASIS OF CALCULATION IS OUR KNOW HOW AND THE  INTERPRETATION PROGRAM COMPANY REITZ VENTILATOREN GMBH & CO.KG - GERMANY -

### With rising energy costs and for sake of the environment, with the positive side effect of lower investment costs and better controllability ###   

         The results of course, varies from cooling system to cooling system.