How many BHP a KW ?

[Alfred Mechsner]

Hello,

today I got confused with BHP. As far as I know, this are
either brake horse power or british horse power.

So I looked it up and found a conversion factor
of
1 KW = 1.341 HP

at a tabel for anglo-american units.

Looking at diesel engines builders catalogs i realized,
they used a conversion factor of

1 KW = 1.36 HP

which is exact the same conversion like PS (in german Pferdestaerken,
which is horse powers).

Which one is the right figure ?

Alfred

--
--------------------------------------------------
Alfred Mechsner e-mail a...@amki.toppoint.de
24113 Kiel Tel./FAX +49 431 642216

[Don Borowski]

Alfred Mechsner (a...@amki.toppoint.de) wrote:
: Hello,

:
: today I got confused with BHP. As far as I know, this are
: either brake horse power or british horse power.
:
: So I looked it up and found a conversion factor of
: 1 KW = 1.341 HP
:
: at a tabel for anglo-american units.
:
: Looking at diesel engines builders catalogs i realized,
: they used a conversion factor of
:
: 1 KW = 1.36 HP
:
: which is exact the same conversion like PS (in german Pferdestaerken,
: which is horse powers).
:
: Which one is the right figure ?

I have always seen 746 W = 1 HP, which comes out to 1 KW = 1.341 HP.

Donald Borowski WA6OMI Hewlett-Packard, Spokane Division
"Angels are able to fly because they take themselves so lightly."
-G.K. Chesterton

[KoalMnr]

Alfred Mechsner (a...@amki.toppoint.de) wrote:
: Hello,
:
: today I got confused with BHP. As far as I know, this are
: either brake horse power or british horse power.
:
: So I looked it up and found a conversion factor of
: 1 KW = 1.341 HP
:
: at a tabel for anglo-american units.
:
: Looking at diesel engines builders catalogs i realized,
: they used a conversion factor of
:
: 1 KW = 1.36 HP
:
: which is exact the same conversion like PS (in german Pferdestaerken,
: which is horse powers).
:
: Which one is the right figure ?

Actual, both are correct. The factor of 1 KW = 1.341 BHP or 0.747 KW = 1
BHP is correct for 3 phase 60 HZ electrical motors. Each type of power
source has it's own conversion factor depending on effiecency. Some
typical ones are:

Horse power (mechanical) 1 hp = 0.7457 kW
Horsepower (boiler) 1 hp = 9.8095 kW
Horsepower (electric/brake)1 hp = 0.746 kW
Horsepower (metric) 1 hp = 0.735499 kw
Horsepower (water) 1 hp = 0.746043 kW

Accept for boiler they all are similar to 2 decimel points.

[FINGERSH LEE JAY]

In article <1994Jul25....@amki.toppoint.de>,

The definition of 1 HP is 550 ft-lbs/second. That converts to 745.7 Watts
per HP or 1.341 HP/KW.

Lee Jay Fingersh
fing...@ucsu.colorado.edu

[John De Armond]

a...@amki.toppoint.de (Alfred Mechsner) writes:

>Hello,

>today I got confused with BHP. As far as I know, this are
>either brake horse power or british horse power.

>So I looked it up and found a conversion factor
>of
> 1 KW = 1.341 HP

>at a tabel for anglo-american units.

>Looking at diesel engines builders catalogs i realized,
>they used a conversion factor of

> 1 KW = 1.36 HP

>which is exact the same conversion like PS (in german Pferdestaerken,
>which is horse powers).

The standard mechanical HP (B stands for "brake", an indication of
mechanical power.) is 33,000 ft-lb/minute or, according to "Engineering
Unit Conversions" by Lindeburg, 745.7 watts. This book lists the
following other "HP"s:

Boiler HP = 9809.5 watts (No, I didn't slip a decimal)
Continental HP = 736 watts
Electrical HP = 746 watts
Metric HP = 735.5 watts
U.S HP = 745.7 watts
Water HP = 746.04 watts
Ad Agency HP = Whatever they choose :-)

Ain't standards grand?

John

--
John De Armond, WD4OQC, Marietta, GA j...@dixie.com
Performance Engineering Magazine. Email to me published at my sole discretion
Respect the VietNam Vet, for he has survived every attempt by this country
to kill him.

[Dick Brewster]

Alfred Mechsner (a...@amki.toppoint.de) wrote:
: Hello,

: today I got confused with BHP. As far as I know, this are
: either brake horse power or british horse power.

: So I looked it up and found a conversion factor
: of
: 1 KW = 1.341 HP

: at a tabel for anglo-american units.

: Looking at diesel engines builders catalogs i realized,
: they used a conversion factor of

: 1 KW = 1.36 HP

: which is exact the same conversion like PS (in german Pferdestaerken,
: which is horse powers).

: Which one is the right figure ?

Depends which country you are in. PS and horsepower are a bit
different. Both values are correct. SOmething to do wuth bigger horses
in Germany (:-).
--
Dick Brewster dbre...@netcom.com