Eco-pea coal-fired boilers with a feeding screw - Nowoczesne kot³y co - PPHU Kotlospaw s.c

Eco-pea coal-fired boilers

KWM-SR, KWM-SGR, K-RET type eco-pea coal-fired boilers with a feeding screw

after firing up a boiler there is no need of permanent operation
combustion process is regulated by a microprocessor controller
refueling the fuel bunker every 2-3 days
maintenance limited to occasional ash removal and cleaning the boiler
these boilers are characterized by slight influence on the environmental pollution
non-stop combustion process (throughout the whole heating season)

K-RET type boilers

K-RET type boilers are modern versions of water heating, coal boilers. They are low-temperature boilers with the regulated combustion process and are pea coal-fired. They are equipped with a feeding screw and specialist coal retort furnace and an extra cast iron fire grate, which makes traditional combustion possible in the event of, for example, power cut, a feeding screw failure or other mechanical failures. Due to their excellent qualities they are easy to maintain and operate as well as they guarantee rational and economical combustion process. If the operation instructions are followed, the boiler will work well for a long time.
KRET-T type boilers meet the requirements of energy efficiency, PN-EN 303-5 standards as well as the Polish regulations and the EU directives concerning safety.
KRE-T type boilers do not need permanent operation if they are installed properly and operation instructions are followed.

Technical specifications of the K-RET type boilers

Detailed list		Unit of measurement	Boiler size
Rated power		kW	15	19	25	38	50	62	75	95
Min. power		kW	5	6	8	12	15	19	23	29
Boiler's heating surface		m²	1,5	2	3	4	5	6	8	10
Heated area		m²	do 100	do 120	120- 200	200- 300	300- 400	400- 500	500- 700	700- 900
Fuel type			Hard coal - boiler pea coal grade type 31 or 31.1 with the granulation/size of 5-25 mm, agglomerating capacity RJ < 10, humidity up to 15%, fine coal content up to 10%, ash content <=10%, softening temperature >=1150°C, sulfur <= 0,6%, calorific value 26 MJ/kg.
Max fuel consumption at the rated power		kg/h	2,5	3	4,2	6,5	8,5	10,0	12,7	16,5
Fuel bunker capacity		kg	95	160		200
Boiler water capacity		L	80,0	80,0	110	140	180	220	280	tel.
Boiler's weight		kg	373	373	452	560	660	801	928	tel.
Max. water temperature		°C	90
Max. water temperature of return and supply		°C	60/70
Max. working pressure		Bar	1,5
Test pressure		Bar	4,0
Thermal efficiency		%	>80
Required flue gas draft		Pa	20-25
Required stack height		m	5	5	6	8		10		12
Required stack hole cross-section o		cm&sup2	230	280			380		480
Diameters of supply connector pipe and return connector pipe o		mm	G2 (60,3x5)							G21/2 (76,1x5)
Dimensions of flue cross-section		mm	140	160			180		200	230
Boiler's / unit's basic dimensions	Exchanger's length	mm	520	520	670	700	800	900	1050	tel.
	Overall length with the flue		970	970	1120	1150	1250	1350	1500	tel.
	Exchanger's width		450	450	500	600	700	800	900	tel.
	Overall width with the flue		1130	1130	1180	1330	1430	1650	1750	tel.
	Exchanger's height		1400	1400	1400	1509	1509	1509	1509	tel.
	Overall height with the flue		1490	1490	1490	1600	1600	1600	1600	tel.
Power consumption of the fan (230V/50Hz)		W	80						370
Power consumption of the motoreducer (230V/50Hz)		W	90						180
Hydraulic resistance		mbar	23

KWM-SR and KWM-SGR type boilers are designed for heating up water in the central heating system to a temperature not exceeding 90°C at the boiler outlet. They may be applied for heating residential buildings, commercial and production facilities, workshops, farms, greenhouses, schools, etc.

While selecting a central heating boiler, the thermal balance of the heated area should be taken into account. The rated thermal efficiency of the boiler should be higher by about 10% than the calculated heat requirement of the heated rooms.

KWM-SR and KWM-SGR type boilers are equipped with a feeding screw and fuel bunkers. Due to their excellent qualities they are easy to maintain and operate as well as they guarantee rational and economical combustion process.

If the operation instructions are followed, the boiler will work well for a long time.

Moreover, the KWM-SR and KWM-SGR type boilers are equipped with a cast iron fire grate, which makes traditional combustion possible in the event of power cut.

THE BOILERS HAVE AN ECOLOGICAL CERTIFICATE

Technical specifications of KWM-SGR type boilers

Detailed list			Unit of measurement	Boiler size
Rated power			kW	19	25	38	50	62	75
Boiler's heating surface			m²	2,0	3,0	4,0	5,0	6,0	7,5
Heated area			m²	do 140	140- 200	200- 300	300- 400	400- 500	500- 700
Fuel type				Hard coal - boiler pea coal grade type 31 or 31.1 with the granulation/size of 5-25 mm, agglomerating capacity RJ < 10, humidity up to 15%, fine coal content up to 10%, softening temperature >=1150°C, volatile matter content 28-40%, sulfur <= 0,6%, calorific value 26 MJ/kg. Boilers with a fire grate may use hard coal or nut coal as fuel
Fuel consumption at the rated power			kg/h	3,3	4,2	6,5	8,5	10,0	12,7
Fuel bunker capacity			kg	95	160	200
Boiler water capacity			L	90	106	134	162	184	220
Boiler's weight without water			kg	420	488	545	635	870	870
Max. water temperature			°C	90
Max. temperature of return and supply			°C	60/70
Max. working pressure			bar	1,5
Test pressure			bar	4
Thermal efficiency			%	>80
Required flue gas draft			Pa	20-25
Required stack height			m	5	6	8		10
Required stack hole cross-section			cm&sup2	280			380		480
Diameters of supply connector pipe and return connector pipe ø			mm	G2(60,3x5)
Dimensions of flue cross-section			mm	160x160			180x180		200x200
Boiler's / unit's basic dimensions	Length	Exchanger	mm	568	618	678	778	778	858
		Overall		880	930	990	1090	1130	1210
	Width	Exchanger		468	528	568	628	698	778
		Overall		1000	1100	1200	1260	1400	1480
	Height without the fan	Exchanger		1475	1475	1535	1535	1585	1585
		Overall		1525	1525	1585	1585	1635	1635
Power consumption (230V/50Hz)			W	175				370
Hydraulic resistance			mbar	23

KWM-SR type boilers meet the requirements of the Energy Law, which authorizes their sale.
They have:

emission and energy tests conducted by an authorized institute,
declaration of conformity in accordance with energy efficiency requirements
technical specifications and a product label

Technical specifications of KWM-SR type boilers

Detailed list		Unit of measurement	Boiler size
Rated power		kW	19	25	38	50	75	100	150	200
Boiler's heating surface		m²	2,0	3,0	4,0	5,0	7,5	10,5	14,0	17,0
Heated area		m²	do 140	do 200	do 300	do 400	do 700	do 1000	do 1300	do 1500
Fuel type			Hard coal - boiler pea coal grade, type 31 or 31.1 with the granulation/ size of 5-25 mm, agglomerating capacity RJ < 10, humidity up to 15%, fine coal content up to 10%, softening temperature >=1150°C, volatile matter content 28-40%, sulfur <= 0,6%, calorific capacity 26 MJ/kg. Boilers with a fire grate may use hard coal or nut coal as fuel.
Fuel consumption at the rated power		kg/h	3	4,2	6,5	8,5	12,7	17,0	25,5	34,0
Fuel bunker capacity		kg	130	130	230	230	230	270	270	270
Boiler water capacity		L	110,0	125,0	170	215	315	450	560	590
Boiler's weight without water		kg	420	488	545	635	870	1280	1580	1850
Max. water temperature		°C	90
Max. temperature of return and supply		°C	60/70
Max. working pressure		bar	1,5						2,0
Test pressure		bar	4
Thermal efficiency		%	84				83
Required flue gas draft		Pa	20		25			25-35
Required stack height		m	6		8		10		12	14
Required stack hole cross-section		cm&sup2	250		280	380	480	660	960	1150
Diameters of supply connector pipe and return connector pipe o		mm	G2
Dimensions of flue cross-section		mm	160x160		180x180		200x200
Boiler's basic dimensions	Length	mm	900	950	1010	1070	1170	1378	1672	1762
	Width		480	510	560	630	780	854	924	1054
	Height		1040	1095	1210	1215	1390	1540	1500	1550
Unit's basic dimensions	Length	mm	1210	1265	1360	1440	1560	1810	2270	2410
	Width		1100	1130	1180	1250	1540	1640	1720	1910
	Height		1155	1205	1320	1325	1500	1650	1650	1655
Power consumption (230V/50Hz)		W	175				370		550
Hydraulic resistance		mbar	22