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BEST-BUS-CL IMATE .COM

REVO®-EALL-ELECTRIC ROOFTOP UNIT

For some time now public transport operators

have been gaining experience with hybrid

or even pure electrobuses in daily operation.

However, the power supply, incl. all hungry

secondary consumers still poses key chal-

lenges.

A new world – for air conditioning as well

With changing conditions for the bus, the world

for its components, in particular the air condi-

tioning system, has drastically changed. Large

rooftop units that draw from an unlimited

supply of diesel-generated energy are a thing

of the past. New solutions must be found, and

Say goodbye to dieSeL

awareness must be acquired for a completely

new form of energy management. This in-

cludes a holistic view of all required energy

flows for heating and cooling, as well as their

optimum control. the goal is comprehensive

thermal management and energy-efficient

vehicle operation.

Prelude for the environment

We call it ‘preconditioning’ when the bus is

pre-heated after a long night so that it can

start off at an optimum temperature. the

energy required for preconditioning the bus is

disproportionately greater than for maintaining

the temperature while on the move. the latter

is an extremely eco-friendly practice.

it is implemented using an off-board electric

power supply – in other words electricity

from the socket.

ReVo®-e:

a member of the Valeo

hybrid family, also for trolley

or electrobuses

behind the broad smile of our new ReVo®-e

is an easy-going relationship to existing

energy resources. its highly efficient individual

components with an intelligent control concept

result in a holistic thermal management

system. in conjunction with optimization

potential in the bus and the prediction of the

route ahead, energy consumption for heating

and cooling can be cut considerably.

Why the components communicate

the name we give to demand-driven control

is ‘load-synchronous thermal management’.

its purpose is to coordinate communications

between all components and to integrate them

into the bus’s overall operating system. they

will then always operate at the optimum level,

depending on the driving profile and available

energy.

The battery also likes it cool

When a bus of the future is equipped with

numerous energy storage units, these batteries

want to be kept at an optimum temperature to

ensure perfect functioning. We have been able

to integrate this type of battery cooling in the

ReVo®-e – a mainstay of the bus of the future.

tHe gReeN SmiLe oF tHe FutuRe

The compressor makes an exit

the past generation of compressors was

located at the rear. that has all changed in

the latest era of bus drive technology and

the compressor now occupies an extremely

compact position on the roof, in close proximity

to the components that implement its cooling

capacity. this has obvious advantages and due

to the integration of all refrigerant-conducting

components the closed system is more

efficient, leak-proof and virtually maintenance-

free. our patented vibration isolation of the

compressor round off the system.

this is a key result of our development activities

for the ReVo®-e, and we are proud of it.

An air conditioning unit that supplies heat

you understood it correctly! the ReVo®-e is

designed to be operated, if required, as a heat

pump by reverse circulation. For this purpose it

uses the energy from the surrounding air and

can efficiently warm the passenger compart-

ment with low power consumption, even at

moderate outside temperatures.

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© V

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REVO®-E Single unit REVO®-E Articulated / double REVO®-E Heatpump REVO®-E Compact (Master + Slave unit)

Cooling capacity (TCL1

=35 °C, T0L1

=40 °C) 25 kW / 30 kW 31 kW 25 kW 24 kW

Heating capacity 40 kW 80 kW 40 kW /16 kW (Heatpump) 40 kW

Air volume 6,960 m3/h 13,920 m3/h 6,960 m3/h 6,960 m3/h

Current consumption Maximum 78 A / 83 A 140 A 78 A 78 A(24 V DC) (all 100 %) Nominal 49 A / 55 A 90 A 49 A 49 A (condenser 80%) (evaporator 70%) Regulated 10 A / 11 A 17 A 10 A 10 A (Temperature of passenger compartment at setpoint)

Current consumption Maximum 22 A 22 A 22 A 22 A(600 V DC) (compressor speed at 50 Hz) Regulated 9 A 11 A 9 A 9 A (temperature passenger compartment at set-point 25 °C and ambient 35 °C)

Weight 258 kg / 260 kg 258 kg + 118 kg 272 Kg 248 Kg

Dimensions (length x wide x height in mm) 2,800 x 2,091 x 406 Master unit: 2,800 x 2,091 x 406 2,800 x 2,091 x 406 2,800 x ,091 x 406 Slave unit: 2,600 x 2,077 x 210

Inverter

Heatpump

✔ ✔ ✔

✔

Valeo Thermal Commercial Vehicles Germany GmbHPO Box 1371 - D-82198 Gilching - Tel. +49 (0)8105 7721-0 - Fax +49 (0)8105 7721-119www.valeo-thermalbus.com - Info-ValeoBus@valeo.com

TECHNICAL DATA

REVO®-E – ALL-ELECTRIC ROOFTOP UNIT

Low life-cycle costs

• Low maintenance costs due to hermetically sealed

refrigerant circuit

Environmentally friendly

• No leakages because of hermetically sealed

refrigerant circuit

• Patented vibration isolation of the compressor

for less noise in the passenger compartment

Comfort

• Controllability and intelligent integration of all electrical

components

• off-board power supply possible

• Cooling of traction battery possible

• Suitable for hot countries

• use as a heat pump possible

Reach

• demand-responsive cooling output depending

on available energy resources

Easy installation

• No installation of refrigerant pipes because of

integrated compressor

Others

• Patented vibration isolation of the compressor

HIGHLIGHTS